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Finding the Fourth Proportional to 303,472.30, 455,390.70 and 125,960.80

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Solution

The fourth proportional to 303,472.30, 455,390.70 and 125,960.80 is: 189,016.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,472.30 : 455,390.70 = 125,960.80 : x
  2. Step 2: Convert to fraction form
    303,472.30/455,390.70 = 125,960.80/x
  3. Step 3: Cross multiply
    303,472.30x = 455,390.70 × 125,960.80
  4. Step 4: Simplify right side
    303,472.30x = 57,361,376,884.56
  5. Step 5: Solve for x
    x = 57,361,376,884.56/303,472.30
  6. Step 6: Final answer
    x = 189,016.85

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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.