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Finding the Fourth Proportional to 508,432.58, 762,653.24 and 129,353.74

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Solution

The fourth proportional to 508,432.58, 762,653.24 and 129,353.74 is: 194,031.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,432.58 : 762,653.24 = 129,353.74 : x
  2. Step 2: Convert to fraction form
    508,432.58/762,653.24 = 129,353.74/x
  3. Step 3: Cross multiply
    508,432.58x = 762,653.24 × 129,353.74
  4. Step 4: Simplify right side
    508,432.58x = 98,652,048,917.12
  5. Step 5: Solve for x
    x = 98,652,048,917.12/508,432.58
  6. Step 6: Final answer
    x = 194,031.72

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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.