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Finding the Fourth Proportional to 451,331, 622,836.78 and 250,139.96

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Solution

The fourth proportional to 451,331, 622,836.78 and 250,139.96 is: 345,193.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,331 : 622,836.78 = 250,139.96 : x
  2. Step 2: Convert to fraction form
    451,331/622,836.78 = 250,139.96/x
  3. Step 3: Cross multiply
    451,331x = 622,836.78 × 250,139.96
  4. Step 4: Simplify right side
    451,331x = 155,796,367,235.73
  5. Step 5: Solve for x
    x = 155,796,367,235.73/451,331
  6. Step 6: Final answer
    x = 345,193.14

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1.5x scale

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.