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Finding the Fourth Proportional to 484,306.80, 726,719.40 and 218,108.40

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Solution

The fourth proportional to 484,306.80, 726,719.40 and 218,108.40 is: 327,279.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,306.80 : 726,719.40 = 218,108.40 : x
  2. Step 2: Convert to fraction form
    484,306.80/726,719.40 = 218,108.40/x
  3. Step 3: Cross multiply
    484,306.80x = 726,719.40 × 218,108.40
  4. Step 4: Simplify right side
    484,306.80x = 158,503,605,582.96
  5. Step 5: Solve for x
    x = 158,503,605,582.96/484,306.80
  6. Step 6: Final answer
    x = 327,279.33

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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.