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Finding the Fourth Proportional to 225,420.65, 311,086.29 and 123,451.73

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Solution

The fourth proportional to 225,420.65, 311,086.29 and 123,451.73 is: 170,366.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,420.65 : 311,086.29 = 123,451.73 : x
  2. Step 2: Convert to fraction form
    225,420.65/311,086.29 = 123,451.73/x
  3. Step 3: Cross multiply
    225,420.65x = 311,086.29 × 123,451.73
  4. Step 4: Simplify right side
    225,420.65x = 38,404,139,124.35
  5. Step 5: Solve for x
    x = 38,404,139,124.35/225,420.65
  6. Step 6: Final answer
    x = 170,366.56

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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.