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Finding the Fourth Proportional to 486,680.76, 671,612.40 and 271,823.94

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Solution

The fourth proportional to 486,680.76, 671,612.40 and 271,823.94 is: 375,113.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,680.76 : 671,612.40 = 271,823.94 : x
  2. Step 2: Convert to fraction form
    486,680.76/671,612.40 = 271,823.94/x
  3. Step 3: Cross multiply
    486,680.76x = 671,612.40 × 271,823.94
  4. Step 4: Simplify right side
    486,680.76x = 182,560,328,720.86
  5. Step 5: Solve for x
    x = 182,560,328,720.86/486,680.76
  6. Step 6: Final answer
    x = 375,113.10

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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.