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Finding the Fourth Proportional to 509,392.46, 764,044.68 and 172,425.90

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Solution

The fourth proportional to 509,392.46, 764,044.68 and 172,425.90 is: 258,623.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,392.46 : 764,044.68 = 172,425.90 : x
  2. Step 2: Convert to fraction form
    509,392.46/764,044.68 = 172,425.90/x
  3. Step 3: Cross multiply
    509,392.46x = 764,044.68 × 172,425.90
  4. Step 4: Simplify right side
    509,392.46x = 131,741,091,589.21
  5. Step 5: Solve for x
    x = 131,741,091,589.21/509,392.46
  6. Step 6: Final answer
    x = 258,623.95

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1.5x scale

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.