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Finding the Fourth Proportional to 551,229.61, 826,522.56 and 213,876.26

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Solution

The fourth proportional to 551,229.61, 826,522.56 and 213,876.26 is: 320,689.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,229.61 : 826,522.56 = 213,876.26 : x
  2. Step 2: Convert to fraction form
    551,229.61/826,522.56 = 213,876.26/x
  3. Step 3: Cross multiply
    551,229.61x = 826,522.56 × 213,876.26
  4. Step 4: Simplify right side
    551,229.61x = 176,773,548,736.43
  5. Step 5: Solve for x
    x = 176,773,548,736.43/551,229.61
  6. Step 6: Final answer
    x = 320,689.50

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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.