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Finding the Fourth Proportional to 486,647.24, 671,559.54 and 271,781

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Solution

The fourth proportional to 486,647.24, 671,559.54 and 271,781 is: 375,050.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,647.24 : 671,559.54 = 271,781 : x
  2. Step 2: Convert to fraction form
    486,647.24/671,559.54 = 271,781/x
  3. Step 3: Cross multiply
    486,647.24x = 671,559.54 × 271,781
  4. Step 4: Simplify right side
    486,647.24x = 182,517,123,340.74
  5. Step 5: Solve for x
    x = 182,517,123,340.74/486,647.24
  6. Step 6: Final answer
    x = 375,050.16

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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.