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Finding the Fourth Proportional to 399,654.52, 551,496.72 and 227,590

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Solution

The fourth proportional to 399,654.52, 551,496.72 and 227,590 is: 314,059.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,654.52 : 551,496.72 = 227,590 : x
  2. Step 2: Convert to fraction form
    399,654.52/551,496.72 = 227,590/x
  3. Step 3: Cross multiply
    399,654.52x = 551,496.72 × 227,590
  4. Step 4: Simplify right side
    399,654.52x = 125,515,138,504.80
  5. Step 5: Solve for x
    x = 125,515,138,504.80/399,654.52
  6. Step 6: Final answer
    x = 314,059.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.