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Finding the Fourth Proportional to 486,621.86, 671,490.18 and 271,757.30

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Solution

The fourth proportional to 486,621.86, 671,490.18 and 271,757.30 is: 374,998.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,621.86 : 671,490.18 = 271,757.30 : x
  2. Step 2: Convert to fraction form
    486,621.86/671,490.18 = 271,757.30/x
  3. Step 3: Cross multiply
    486,621.86x = 671,490.18 × 271,757.30
  4. Step 4: Simplify right side
    486,621.86x = 182,482,358,293.31
  5. Step 5: Solve for x
    x = 182,482,358,293.31/486,621.86
  6. Step 6: Final answer
    x = 374,998.28

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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.