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Finding the Fourth Proportional to 484,974.80, 727,116.60 and 218,517.20

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Solution

The fourth proportional to 484,974.80, 727,116.60 and 218,517.20 is: 327,620.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,974.80 : 727,116.60 = 218,517.20 : x
  2. Step 2: Convert to fraction form
    484,974.80/727,116.60 = 218,517.20/x
  3. Step 3: Cross multiply
    484,974.80x = 727,116.60 × 218,517.20
  4. Step 4: Simplify right side
    484,974.80x = 158,887,483,505.52
  5. Step 5: Solve for x
    x = 158,887,483,505.52/484,974.80
  6. Step 6: Final answer
    x = 327,620.08

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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.