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Finding the Fourth Proportional to 343,691.88, 515,914.92 and 273,068.40

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Solution

The fourth proportional to 343,691.88, 515,914.92 and 273,068.40 is: 409,902.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,691.88 : 515,914.92 = 273,068.40 : x
  2. Step 2: Convert to fraction form
    343,691.88/515,914.92 = 273,068.40/x
  3. Step 3: Cross multiply
    343,691.88x = 515,914.92 × 273,068.40
  4. Step 4: Simplify right side
    343,691.88x = 140,880,061,740.53
  5. Step 5: Solve for x
    x = 140,880,061,740.53/343,691.88
  6. Step 6: Final answer
    x = 409,902.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.