Home / 420,354.20-580,097.22-229,375.64

Finding the Fourth Proportional to 420,354.20, 580,097.22 and 229,375.64

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Solution

The fourth proportional to 420,354.20, 580,097.22 and 229,375.64 is: 316,542.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,354.20 : 580,097.22 = 229,375.64 : x
  2. Step 2: Convert to fraction form
    420,354.20/580,097.22 = 229,375.64/x
  3. Step 3: Cross multiply
    420,354.20x = 580,097.22 × 229,375.64
  4. Step 4: Simplify right side
    420,354.20x = 133,060,171,099.72
  5. Step 5: Solve for x
    x = 133,060,171,099.72/420,354.20
  6. Step 6: Final answer
    x = 316,542.98

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1.5x scale

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.