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Finding the Fourth Proportional to 551,436.80, 827,308.80 and 270,963.20

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Solution

The fourth proportional to 551,436.80, 827,308.80 and 270,963.20 is: 406,520.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,436.80 : 827,308.80 = 270,963.20 : x
  2. Step 2: Convert to fraction form
    551,436.80/827,308.80 = 270,963.20/x
  3. Step 3: Cross multiply
    551,436.80x = 827,308.80 × 270,963.20
  4. Step 4: Simplify right side
    551,436.80x = 224,170,239,836.16
  5. Step 5: Solve for x
    x = 224,170,239,836.16/551,436.80
  6. Step 6: Final answer
    x = 406,520.28

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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.