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Finding the Fourth Proportional to 482,128.64, 665,292.68 and 267,250.40

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Solution

The fourth proportional to 482,128.64, 665,292.68 and 267,250.40 is: 368,780.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,128.64 : 665,292.68 = 267,250.40 : x
  2. Step 2: Convert to fraction form
    482,128.64/665,292.68 = 267,250.40/x
  3. Step 3: Cross multiply
    482,128.64x = 665,292.68 × 267,250.40
  4. Step 4: Simplify right side
    482,128.64x = 177,799,734,847.07
  5. Step 5: Solve for x
    x = 177,799,734,847.07/482,128.64
  6. Step 6: Final answer
    x = 368,780.69

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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.