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Finding the Fourth Proportional to 543,155.20, 814,927.20 and 227,708.80

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Solution

The fourth proportional to 543,155.20, 814,927.20 and 227,708.80 is: 341,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,155.20 : 814,927.20 = 227,708.80 : x
  2. Step 2: Convert to fraction form
    543,155.20/814,927.20 = 227,708.80/x
  3. Step 3: Cross multiply
    543,155.20x = 814,927.20 × 227,708.80
  4. Step 4: Simplify right side
    543,155.20x = 185,566,094,799.36
  5. Step 5: Solve for x
    x = 185,566,094,799.36/543,155.20
  6. Step 6: Final answer
    x = 341,644.70

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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.