Home / 256,251.53-384,414.05-78,773.45

Finding the Fourth Proportional to 256,251.53, 384,414.05 and 78,773.45

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Solution

The fourth proportional to 256,251.53, 384,414.05 and 78,773.45 is: 118,171.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,251.53 : 384,414.05 = 78,773.45 : x
  2. Step 2: Convert to fraction form
    256,251.53/384,414.05 = 78,773.45/x
  3. Step 3: Cross multiply
    256,251.53x = 384,414.05 × 78,773.45
  4. Step 4: Simplify right side
    256,251.53x = 30,281,619,221.84
  5. Step 5: Solve for x
    x = 30,281,619,221.84/256,251.53
  6. Step 6: Final answer
    x = 118,171.47

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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.