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Finding the Fourth Proportional to 486,753.12, 730,126.48 and 198,563.68

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Solution

The fourth proportional to 486,753.12, 730,126.48 and 198,563.68 is: 297,844.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,753.12 : 730,126.48 = 198,563.68 : x
  2. Step 2: Convert to fraction form
    486,753.12/730,126.48 = 198,563.68/x
  3. Step 3: Cross multiply
    486,753.12x = 730,126.48 × 198,563.68
  4. Step 4: Simplify right side
    486,753.12x = 144,976,600,734.25
  5. Step 5: Solve for x
    x = 144,976,600,734.25/486,753.12
  6. Step 6: Final answer
    x = 297,844.21

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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.