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Finding the Fourth Proportional to 354,188.67, 531,142.05 and 129,497.91

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Solution

The fourth proportional to 354,188.67, 531,142.05 and 129,497.91 is: 194,195.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,188.67 : 531,142.05 = 129,497.91 : x
  2. Step 2: Convert to fraction form
    354,188.67/531,142.05 = 129,497.91/x
  3. Step 3: Cross multiply
    354,188.67x = 531,142.05 × 129,497.91
  4. Step 4: Simplify right side
    354,188.67x = 68,781,785,388.12
  5. Step 5: Solve for x
    x = 68,781,785,388.12/354,188.67
  6. Step 6: Final answer
    x = 194,195.33

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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.