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Finding the Fourth Proportional to 225,406.53, 310,990.59 and 129,900.24

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Solution

The fourth proportional to 225,406.53, 310,990.59 and 129,900.24 is: 179,221.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,406.53 : 310,990.59 = 129,900.24 : x
  2. Step 2: Convert to fraction form
    225,406.53/310,990.59 = 129,900.24/x
  3. Step 3: Cross multiply
    225,406.53x = 310,990.59 × 129,900.24
  4. Step 4: Simplify right side
    225,406.53x = 40,397,752,278.74
  5. Step 5: Solve for x
    x = 40,397,752,278.74/225,406.53
  6. Step 6: Final answer
    x = 179,221.75

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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.