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Finding the Fourth Proportional to 253,960.60, 380,972.39 and 83,123.64

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Solution

The fourth proportional to 253,960.60, 380,972.39 and 83,123.64 is: 124,695.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,960.60 : 380,972.39 = 83,123.64 : x
  2. Step 2: Convert to fraction form
    253,960.60/380,972.39 = 83,123.64/x
  3. Step 3: Cross multiply
    253,960.60x = 380,972.39 × 83,123.64
  4. Step 4: Simplify right side
    253,960.60x = 31,667,811,796.30
  5. Step 5: Solve for x
    x = 31,667,811,796.30/253,960.60
  6. Step 6: Final answer
    x = 124,695.77

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1.5x scale

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.