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Finding the Fourth Proportional to 486,710.10, 671,652.78 and 271,853.30

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Solution

The fourth proportional to 486,710.10, 671,652.78 and 271,853.30 is: 375,153.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,710.10 : 671,652.78 = 271,853.30 : x
  2. Step 2: Convert to fraction form
    486,710.10/671,652.78 = 271,853.30/x
  3. Step 3: Cross multiply
    486,710.10x = 671,652.78 × 271,853.30
  4. Step 4: Simplify right side
    486,710.10x = 182,591,024,697.17
  5. Step 5: Solve for x
    x = 182,591,024,697.17/486,710.10
  6. Step 6: Final answer
    x = 375,153.56

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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.