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Finding the Fourth Proportional to 486,281.76, 671,102.64 and 271,463.76

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Solution

The fourth proportional to 486,281.76, 671,102.64 and 271,463.76 is: 374,638.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,281.76 : 671,102.64 = 271,463.76 : x
  2. Step 2: Convert to fraction form
    486,281.76/671,102.64 = 271,463.76/x
  3. Step 3: Cross multiply
    486,281.76x = 671,102.64 × 271,463.76
  4. Step 4: Simplify right side
    486,281.76x = 182,180,046,000.33
  5. Step 5: Solve for x
    x = 182,180,046,000.33/486,281.76
  6. Step 6: Final answer
    x = 374,638.86

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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.