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Finding the Fourth Proportional to 251,439.78, 377,079.45 and 82,928.58

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Solution

The fourth proportional to 251,439.78, 377,079.45 and 82,928.58 is: 124,366.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,439.78 : 377,079.45 = 82,928.58 : x
  2. Step 2: Convert to fraction form
    251,439.78/377,079.45 = 82,928.58/x
  3. Step 3: Cross multiply
    251,439.78x = 377,079.45 × 82,928.58
  4. Step 4: Simplify right side
    251,439.78x = 31,270,663,335.68
  5. Step 5: Solve for x
    x = 31,270,663,335.68/251,439.78
  6. Step 6: Final answer
    x = 124,366.41

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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.