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Finding the Fourth Proportional to 273,614.30, 410,421.45 and 86,625.80

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Solution

The fourth proportional to 273,614.30, 410,421.45 and 86,625.80 is: 129,938.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,614.30 : 410,421.45 = 86,625.80 : x
  2. Step 2: Convert to fraction form
    273,614.30/410,421.45 = 86,625.80/x
  3. Step 3: Cross multiply
    273,614.30x = 410,421.45 × 86,625.80
  4. Step 4: Simplify right side
    273,614.30x = 35,553,086,443.41
  5. Step 5: Solve for x
    x = 35,553,086,443.41/273,614.30
  6. Step 6: Final answer
    x = 129,938.70

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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.