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Finding the Fourth Proportional to 320,079.85, 480,117.94 and 130,539.24

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Solution

The fourth proportional to 320,079.85, 480,117.94 and 130,539.24 is: 195,808.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,079.85 : 480,117.94 = 130,539.24 : x
  2. Step 2: Convert to fraction form
    320,079.85/480,117.94 = 130,539.24/x
  3. Step 3: Cross multiply
    320,079.85x = 480,117.94 × 130,539.24
  4. Step 4: Simplify right side
    320,079.85x = 62,674,230,671.62
  5. Step 5: Solve for x
    x = 62,674,230,671.62/320,079.85
  6. Step 6: Final answer
    x = 195,808.11

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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.