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Finding the Fourth Proportional to 320,872.80, 481,309.20 and 292,879.20

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Solution

The fourth proportional to 320,872.80, 481,309.20 and 292,879.20 is: 439,318.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,872.80 : 481,309.20 = 292,879.20 : x
  2. Step 2: Convert to fraction form
    320,872.80/481,309.20 = 292,879.20/x
  3. Step 3: Cross multiply
    320,872.80x = 481,309.20 × 292,879.20
  4. Step 4: Simplify right side
    320,872.80x = 140,965,453,448.64
  5. Step 5: Solve for x
    x = 140,965,453,448.64/320,872.80
  6. Step 6: Final answer
    x = 439,318.80

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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.