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Finding the Fourth Proportional to 551,159.28, 826,417.17 and 213,805.74

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Solution

The fourth proportional to 551,159.28, 826,417.17 and 213,805.74 is: 320,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,159.28 : 826,417.17 = 213,805.74 : x
  2. Step 2: Convert to fraction form
    551,159.28/826,417.17 = 213,805.74/x
  3. Step 3: Cross multiply
    551,159.28x = 826,417.17 × 213,805.74
  4. Step 4: Simplify right side
    551,159.28x = 176,692,734,580.56
  5. Step 5: Solve for x
    x = 176,692,734,580.56/551,159.28
  6. Step 6: Final answer
    x = 320,583.80

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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.