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Finding the Fourth Proportional to 425,733.60, 637,909.20 and 267,679.20

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Solution

The fourth proportional to 425,733.60, 637,909.20 and 267,679.20 is: 401,084.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,733.60 : 637,909.20 = 267,679.20 : x
  2. Step 2: Convert to fraction form
    425,733.60/637,909.20 = 267,679.20/x
  3. Step 3: Cross multiply
    425,733.60x = 637,909.20 × 267,679.20
  4. Step 4: Simplify right side
    425,733.60x = 170,755,024,328.64
  5. Step 5: Solve for x
    x = 170,755,024,328.64/425,733.60
  6. Step 6: Final answer
    x = 401,084.21

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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.