Home / 320,021,560.80-480,032,341.20-239,399,992.80

Finding the Fourth Proportional to 320,021,560.80, 480,032,341.20 and 239,399,992.80

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Solution

The fourth proportional to 320,021,560.80, 480,032,341.20 and 239,399,992.80 is: 359,099,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,021,560.80 : 480,032,341.20 = 239,399,992.80 : x
  2. Step 2: Convert to fraction form
    320,021,560.80/480,032,341.20 = 239,399,992.80/x
  3. Step 3: Cross multiply
    320,021,560.80x = 480,032,341.20 × 239,399,992.80
  4. Step 4: Simplify right side
    320,021,560.80x = 114,919,739,027,047,152
  5. Step 5: Solve for x
    x = 114,919,739,027,047,152/320,021,560.80
  6. Step 6: Final answer
    x = 359,099,989.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.