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Finding the Fourth Proportional to 225,690, 311,474.88 and 125,107.44

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Solution

The fourth proportional to 225,690, 311,474.88 and 125,107.44 is: 172,660.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,690 : 311,474.88 = 125,107.44 : x
  2. Step 2: Convert to fraction form
    225,690/311,474.88 = 125,107.44/x
  3. Step 3: Cross multiply
    225,690x = 311,474.88 × 125,107.44
  4. Step 4: Simplify right side
    225,690x = 38,967,824,861.11
  5. Step 5: Solve for x
    x = 38,967,824,861.11/225,690
  6. Step 6: Final answer
    x = 172,660.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.