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Finding the Fourth Proportional to 251,123.76, 376,688.70 and 73,634.31

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Solution

The fourth proportional to 251,123.76, 376,688.70 and 73,634.31 is: 110,452.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,123.76 : 376,688.70 = 73,634.31 : x
  2. Step 2: Convert to fraction form
    251,123.76/376,688.70 = 73,634.31/x
  3. Step 3: Cross multiply
    251,123.76x = 376,688.70 × 73,634.31
  4. Step 4: Simplify right side
    251,123.76x = 27,737,212,509.30
  5. Step 5: Solve for x
    x = 27,737,212,509.30/251,123.76
  6. Step 6: Final answer
    x = 110,452.36

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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.