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Finding the Fourth Proportional to 484,552.80, 726,829.20 and 218,613.60

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Solution

The fourth proportional to 484,552.80, 726,829.20 and 218,613.60 is: 327,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,552.80 : 726,829.20 = 218,613.60 : x
  2. Step 2: Convert to fraction form
    484,552.80/726,829.20 = 218,613.60/x
  3. Step 3: Cross multiply
    484,552.80x = 726,829.20 × 218,613.60
  4. Step 4: Simplify right side
    484,552.80x = 158,894,747,997.12
  5. Step 5: Solve for x
    x = 158,894,747,997.12/484,552.80
  6. Step 6: Final answer
    x = 327,920.40

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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.