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Finding the Fourth Proportional to 410,280.09, 615,469.28 and 125,933.40

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Solution

The fourth proportional to 410,280.09, 615,469.28 and 125,933.40 is: 188,915.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,280.09 : 615,469.28 = 125,933.40 : x
  2. Step 2: Convert to fraction form
    410,280.09/615,469.28 = 125,933.40/x
  3. Step 3: Cross multiply
    410,280.09x = 615,469.28 × 125,933.40
  4. Step 4: Simplify right side
    410,280.09x = 77,508,138,396.29
  5. Step 5: Solve for x
    x = 77,508,138,396.29/410,280.09
  6. Step 6: Final answer
    x = 188,915.18

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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.