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Finding the Fourth Proportional to 487,989.14, 731,900.66 and 132,920.10

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Solution

The fourth proportional to 487,989.14, 731,900.66 and 132,920.10 is: 199,357.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,989.14 : 731,900.66 = 132,920.10 : x
  2. Step 2: Convert to fraction form
    487,989.14/731,900.66 = 132,920.10/x
  3. Step 3: Cross multiply
    487,989.14x = 731,900.66 × 132,920.10
  4. Step 4: Simplify right side
    487,989.14x = 97,284,308,252.67
  5. Step 5: Solve for x
    x = 97,284,308,252.67/487,989.14
  6. Step 6: Final answer
    x = 199,357.53

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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.