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Finding the Fourth Proportional to 425,454.60, 637,490.70 and 267,400.20

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Solution

The fourth proportional to 425,454.60, 637,490.70 and 267,400.20 is: 400,665.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,454.60 : 637,490.70 = 267,400.20 : x
  2. Step 2: Convert to fraction form
    425,454.60/637,490.70 = 267,400.20/x
  3. Step 3: Cross multiply
    425,454.60x = 637,490.70 × 267,400.20
  4. Step 4: Simplify right side
    425,454.60x = 170,465,140,678.14
  5. Step 5: Solve for x
    x = 170,465,140,678.14/425,454.60
  6. Step 6: Final answer
    x = 400,665.88

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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.