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Finding the Fourth Proportional to 543,169.80, 814,754.70 and 343,715.40

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Solution

The fourth proportional to 543,169.80, 814,754.70 and 343,715.40 is: 515,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,169.80 : 814,754.70 = 343,715.40 : x
  2. Step 2: Convert to fraction form
    543,169.80/814,754.70 = 343,715.40/x
  3. Step 3: Cross multiply
    543,169.80x = 814,754.70 × 343,715.40
  4. Step 4: Simplify right side
    543,169.80x = 280,043,737,612.38
  5. Step 5: Solve for x
    x = 280,043,737,612.38/543,169.80
  6. Step 6: Final answer
    x = 515,573.10

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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.