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Finding the Fourth Proportional to 225,008.80, 310,530.96 and 129,546.40

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Solution

The fourth proportional to 225,008.80, 310,530.96 and 129,546.40 is: 178,784.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,008.80 : 310,530.96 = 129,546.40 : x
  2. Step 2: Convert to fraction form
    225,008.80/310,530.96 = 129,546.40/x
  3. Step 3: Cross multiply
    225,008.80x = 310,530.96 × 129,546.40
  4. Step 4: Simplify right side
    225,008.80x = 40,228,167,956.54
  5. Step 5: Solve for x
    x = 40,228,167,956.54/225,008.80
  6. Step 6: Final answer
    x = 178,784.87

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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.