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Finding the Fourth Proportional to 482,420.75, 665,781.50 and 267,630

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Solution

The fourth proportional to 482,420.75, 665,781.50 and 267,630 is: 369,352.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,420.75 : 665,781.50 = 267,630 : x
  2. Step 2: Convert to fraction form
    482,420.75/665,781.50 = 267,630/x
  3. Step 3: Cross multiply
    482,420.75x = 665,781.50 × 267,630
  4. Step 4: Simplify right side
    482,420.75x = 178,183,103,514.08
  5. Step 5: Solve for x
    x = 178,183,103,514.08/482,420.75
  6. Step 6: Final answer
    x = 369,352.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.