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Finding the Fourth Proportional to 508,083.78, 762,126.02 and 129,032.94

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Solution

The fourth proportional to 508,083.78, 762,126.02 and 129,032.94 is: 193,549.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,083.78 : 762,126.02 = 129,032.94 : x
  2. Step 2: Convert to fraction form
    508,083.78/762,126.02 = 129,032.94/x
  3. Step 3: Cross multiply
    508,083.78x = 762,126.02 × 129,032.94
  4. Step 4: Simplify right side
    508,083.78x = 98,339,361,011.10
  5. Step 5: Solve for x
    x = 98,339,361,011.10/508,083.78
  6. Step 6: Final answer
    x = 193,549.50

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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.