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Finding the Fourth Proportional to 251,439.70, 377,396.58 and 91,670.14

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Solution

The fourth proportional to 251,439.70, 377,396.58 and 91,670.14 is: 137,591.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,439.70 : 377,396.58 = 91,670.14 : x
  2. Step 2: Convert to fraction form
    251,439.70/377,396.58 = 91,670.14/x
  3. Step 3: Cross multiply
    251,439.70x = 377,396.58 × 91,670.14
  4. Step 4: Simplify right side
    251,439.70x = 34,595,997,324.12
  5. Step 5: Solve for x
    x = 34,595,997,324.12/251,439.70
  6. Step 6: Final answer
    x = 137,591.63

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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.