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Finding the Fourth Proportional to 508,071.90, 762,108.19 and 129,021.06

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Solution

The fourth proportional to 508,071.90, 762,108.19 and 129,021.06 is: 193,531.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,071.90 : 762,108.19 = 129,021.06 : x
  2. Step 2: Convert to fraction form
    508,071.90/762,108.19 = 129,021.06/x
  3. Step 3: Cross multiply
    508,071.90x = 762,108.19 × 129,021.06
  4. Step 4: Simplify right side
    508,071.90x = 98,328,006,508.48
  5. Step 5: Solve for x
    x = 98,328,006,508.48/508,071.90
  6. Step 6: Final answer
    x = 193,531.68

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Similar ratio
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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.