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Finding the Fourth Proportional to 410,147.70, 615,221.55 and 250,715.40

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Solution

The fourth proportional to 410,147.70, 615,221.55 and 250,715.40 is: 376,073.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,147.70 : 615,221.55 = 250,715.40 : x
  2. Step 2: Convert to fraction form
    410,147.70/615,221.55 = 250,715.40/x
  3. Step 3: Cross multiply
    410,147.70x = 615,221.55 × 250,715.40
  4. Step 4: Simplify right side
    410,147.70x = 154,245,516,996.87
  5. Step 5: Solve for x
    x = 154,245,516,996.87/410,147.70
  6. Step 6: Final answer
    x = 376,073.10

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1.5x scale

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.