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Finding the Fourth Proportional to 425,726.60, 637,898.70 and 267,672.20

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Solution

The fourth proportional to 425,726.60, 637,898.70 and 267,672.20 is: 401,073.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,726.60 : 637,898.70 = 267,672.20 : x
  2. Step 2: Convert to fraction form
    425,726.60/637,898.70 = 267,672.20/x
  3. Step 3: Cross multiply
    425,726.60x = 637,898.70 × 267,672.20
  4. Step 4: Simplify right side
    425,726.60x = 170,747,748,406.14
  5. Step 5: Solve for x
    x = 170,747,748,406.14/425,726.60
  6. Step 6: Final answer
    x = 401,073.71

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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.