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Finding the Fourth Proportional to 386,126.76, 532,264.26 and 271,082.64

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Solution

The fourth proportional to 386,126.76, 532,264.26 and 271,082.64 is: 373,679.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,126.76 : 532,264.26 = 271,082.64 : x
  2. Step 2: Convert to fraction form
    386,126.76/532,264.26 = 271,082.64/x
  3. Step 3: Cross multiply
    386,126.76x = 532,264.26 × 271,082.64
  4. Step 4: Simplify right side
    386,126.76x = 144,287,600,778.45
  5. Step 5: Solve for x
    x = 144,287,600,778.45/386,126.76
  6. Step 6: Final answer
    x = 373,679.36

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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.