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Finding the Fourth Proportional to 426,245.76, 639,488.52 and 186,380.73

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Solution

The fourth proportional to 426,245.76, 639,488.52 and 186,380.73 is: 279,623.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,245.76 : 639,488.52 = 186,380.73 : x
  2. Step 2: Convert to fraction form
    426,245.76/639,488.52 = 186,380.73/x
  3. Step 3: Cross multiply
    426,245.76x = 639,488.52 × 186,380.73
  4. Step 4: Simplify right side
    426,245.76x = 119,188,337,184.22
  5. Step 5: Solve for x
    x = 119,188,337,184.22/426,245.76
  6. Step 6: Final answer
    x = 279,623.51

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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.