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Finding the Fourth Proportional to 487,666.10, 731,425.34 and 132,707.80

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Solution

The fourth proportional to 487,666.10, 731,425.34 and 132,707.80 is: 199,041.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,666.10 : 731,425.34 = 132,707.80 : x
  2. Step 2: Convert to fraction form
    487,666.10/731,425.34 = 132,707.80/x
  3. Step 3: Cross multiply
    487,666.10x = 731,425.34 × 132,707.80
  4. Step 4: Simplify right side
    487,666.10x = 97,065,847,735.65
  5. Step 5: Solve for x
    x = 97,065,847,735.65/487,666.10
  6. Step 6: Final answer
    x = 199,041.61

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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.