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Finding the Fourth Proportional to 486,955.20, 730,087.20 and 220,843.20

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Solution

The fourth proportional to 486,955.20, 730,087.20 and 220,843.20 is: 331,108.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,955.20 : 730,087.20 = 220,843.20 : x
  2. Step 2: Convert to fraction form
    486,955.20/730,087.20 = 220,843.20/x
  3. Step 3: Cross multiply
    486,955.20x = 730,087.20 × 220,843.20
  4. Step 4: Simplify right side
    486,955.20x = 161,234,793,527.04
  5. Step 5: Solve for x
    x = 161,234,793,527.04/486,955.20
  6. Step 6: Final answer
    x = 331,108.06

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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.