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Finding the Fourth Proportional to 486,600.72, 671,432.40 and 271,730.40

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Solution

The fourth proportional to 486,600.72, 671,432.40 and 271,730.40 is: 374,945.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,600.72 : 671,432.40 = 271,730.40 : x
  2. Step 2: Convert to fraction form
    486,600.72/671,432.40 = 271,730.40/x
  3. Step 3: Cross multiply
    486,600.72x = 671,432.40 × 271,730.40
  4. Step 4: Simplify right side
    486,600.72x = 182,448,594,624.96
  5. Step 5: Solve for x
    x = 182,448,594,624.96/486,600.72
  6. Step 6: Final answer
    x = 374,945.18

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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.