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Finding the Fourth Proportional to 543,315.20, 814,972.80 and 341,236.40

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Solution

The fourth proportional to 543,315.20, 814,972.80 and 341,236.40 is: 511,854.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,315.20 : 814,972.80 = 341,236.40 : x
  2. Step 2: Convert to fraction form
    543,315.20/814,972.80 = 341,236.40/x
  3. Step 3: Cross multiply
    543,315.20x = 814,972.80 × 341,236.40
  4. Step 4: Simplify right side
    543,315.20x = 278,098,384,369.92
  5. Step 5: Solve for x
    x = 278,098,384,369.92/543,315.20
  6. Step 6: Final answer
    x = 511,854.60

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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.