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Finding the Fourth Proportional to 531,228.58, 797,310.33 and 278,689.54

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Solution

The fourth proportional to 531,228.58, 797,310.33 and 278,689.54 is: 418,279.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,228.58 : 797,310.33 = 278,689.54 : x
  2. Step 2: Convert to fraction form
    531,228.58/797,310.33 = 278,689.54/x
  3. Step 3: Cross multiply
    531,228.58x = 797,310.33 × 278,689.54
  4. Step 4: Simplify right side
    531,228.58x = 222,202,049,104.95
  5. Step 5: Solve for x
    x = 222,202,049,104.95/531,228.58
  6. Step 6: Final answer
    x = 418,279.55

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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.