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Finding the Fourth Proportional to 251,363.85, 377,225.70 and 91,439.47

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Solution

The fourth proportional to 251,363.85, 377,225.70 and 91,439.47 is: 137,224.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,363.85 : 377,225.70 = 91,439.47 : x
  2. Step 2: Convert to fraction form
    251,363.85/377,225.70 = 91,439.47/x
  3. Step 3: Cross multiply
    251,363.85x = 377,225.70 × 91,439.47
  4. Step 4: Simplify right side
    251,363.85x = 34,493,318,078.38
  5. Step 5: Solve for x
    x = 34,493,318,078.38/251,363.85
  6. Step 6: Final answer
    x = 137,224.66

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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.