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Finding the Fourth Proportional to 251,366.86, 377,230.20 and 91,442.47

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Solution

The fourth proportional to 251,366.86, 377,230.20 and 91,442.47 is: 137,229.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,366.86 : 377,230.20 = 91,442.47 : x
  2. Step 2: Convert to fraction form
    251,366.86/377,230.20 = 91,442.47/x
  3. Step 3: Cross multiply
    251,366.86x = 377,230.20 × 91,442.47
  4. Step 4: Simplify right side
    251,366.86x = 34,494,861,246.59
  5. Step 5: Solve for x
    x = 34,494,861,246.59/251,366.86
  6. Step 6: Final answer
    x = 137,229.15

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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.