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Finding the Fourth Proportional to 508,432.44, 762,653.16 and 129,353.61

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Solution

The fourth proportional to 508,432.44, 762,653.16 and 129,353.61 is: 194,031.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,432.44 : 762,653.16 = 129,353.61 : x
  2. Step 2: Convert to fraction form
    508,432.44/762,653.16 = 129,353.61/x
  3. Step 3: Cross multiply
    508,432.44x = 762,653.16 × 129,353.61
  4. Step 4: Simplify right side
    508,432.44x = 98,651,939,423.91
  5. Step 5: Solve for x
    x = 98,651,939,423.91/508,432.44
  6. Step 6: Final answer
    x = 194,031.56

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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.