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Finding the Fourth Proportional to 323,737.20, 485,605.80 and 99,097.20

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Solution

The fourth proportional to 323,737.20, 485,605.80 and 99,097.20 is: 148,645.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,737.20 : 485,605.80 = 99,097.20 : x
  2. Step 2: Convert to fraction form
    323,737.20/485,605.80 = 99,097.20/x
  3. Step 3: Cross multiply
    323,737.20x = 485,605.80 × 99,097.20
  4. Step 4: Simplify right side
    323,737.20x = 48,122,175,083.76
  5. Step 5: Solve for x
    x = 48,122,175,083.76/323,737.20
  6. Step 6: Final answer
    x = 148,645.80

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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.