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Finding the Fourth Proportional to 225,311.88, 310,945.44 and 129,824.76

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Solution

The fourth proportional to 225,311.88, 310,945.44 and 129,824.76 is: 179,166.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,311.88 : 310,945.44 = 129,824.76 : x
  2. Step 2: Convert to fraction form
    225,311.88/310,945.44 = 129,824.76/x
  3. Step 3: Cross multiply
    225,311.88x = 310,945.44 × 129,824.76
  4. Step 4: Simplify right side
    225,311.88x = 40,368,417,121.09
  5. Step 5: Solve for x
    x = 40,368,417,121.09/225,311.88
  6. Step 6: Final answer
    x = 179,166.84

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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.