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Finding the Fourth Proportional to 508,424.08, 762,632.70 and 129,341.56

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Solution

The fourth proportional to 508,424.08, 762,632.70 and 129,341.56 is: 194,011.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,424.08 : 762,632.70 = 129,341.56 : x
  2. Step 2: Convert to fraction form
    508,424.08/762,632.70 = 129,341.56/x
  3. Step 3: Cross multiply
    508,424.08x = 762,632.70 × 129,341.56
  4. Step 4: Simplify right side
    508,424.08x = 98,640,103,125.01
  5. Step 5: Solve for x
    x = 98,640,103,125.01/508,424.08
  6. Step 6: Final answer
    x = 194,011.47

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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.