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Finding the Fourth Proportional to 486,420, 671,246.52 and 271,554

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Solution

The fourth proportional to 486,420, 671,246.52 and 271,554 is: 374,737.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,420 : 671,246.52 = 271,554 : x
  2. Step 2: Convert to fraction form
    486,420/671,246.52 = 271,554/x
  3. Step 3: Cross multiply
    486,420x = 671,246.52 × 271,554
  4. Step 4: Simplify right side
    486,420x = 182,279,677,492.08
  5. Step 5: Solve for x
    x = 182,279,677,492.08/486,420
  6. Step 6: Final answer
    x = 374,737.22

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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.