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Finding the Fourth Proportional to 459,073.52, 688,649.96 and 126,649.52

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Solution

The fourth proportional to 459,073.52, 688,649.96 and 126,649.52 is: 189,985.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,073.52 : 688,649.96 = 126,649.52 : x
  2. Step 2: Convert to fraction form
    459,073.52/688,649.96 = 126,649.52/x
  3. Step 3: Cross multiply
    459,073.52x = 688,649.96 × 126,649.52
  4. Step 4: Simplify right side
    459,073.52x = 87,217,186,882.02
  5. Step 5: Solve for x
    x = 87,217,186,882.02/459,073.52
  6. Step 6: Final answer
    x = 189,985.23

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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.