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Finding the Fourth Proportional to 251,806.05, 347,483.89 and 137,082.53

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Solution

The fourth proportional to 251,806.05, 347,483.89 and 137,082.53 is: 189,169.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,806.05 : 347,483.89 = 137,082.53 : x
  2. Step 2: Convert to fraction form
    251,806.05/347,483.89 = 137,082.53/x
  3. Step 3: Cross multiply
    251,806.05x = 347,483.89 × 137,082.53
  4. Step 4: Simplify right side
    251,806.05x = 47,633,969,282.59
  5. Step 5: Solve for x
    x = 47,633,969,282.59/251,806.05
  6. Step 6: Final answer
    x = 189,169.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.