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Finding the Fourth Proportional to 251,696.64, 377,432 and 74,141.44

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Solution

The fourth proportional to 251,696.64, 377,432 and 74,141.44 is: 111,178.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,696.64 : 377,432 = 74,141.44 : x
  2. Step 2: Convert to fraction form
    251,696.64/377,432 = 74,141.44/x
  3. Step 3: Cross multiply
    251,696.64x = 377,432 × 74,141.44
  4. Step 4: Simplify right side
    251,696.64x = 27,983,351,982.08
  5. Step 5: Solve for x
    x = 27,983,351,982.08/251,696.64
  6. Step 6: Final answer
    x = 111,178.89

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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.