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Finding the Fourth Proportional to 487,233.90, 730,850.49 and 132,300

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Solution

The fourth proportional to 487,233.90, 730,850.49 and 132,300 is: 198,449.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,233.90 : 730,850.49 = 132,300 : x
  2. Step 2: Convert to fraction form
    487,233.90/730,850.49 = 132,300/x
  3. Step 3: Cross multiply
    487,233.90x = 730,850.49 × 132,300
  4. Step 4: Simplify right side
    487,233.90x = 96,691,519,827
  5. Step 5: Solve for x
    x = 96,691,519,827/487,233.90
  6. Step 6: Final answer
    x = 198,449.90

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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.