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Finding the Fourth Proportional to 225,403.92, 311,056.92 and 129,909.96

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Solution

The fourth proportional to 225,403.92, 311,056.92 and 129,909.96 is: 179,275.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,403.92 : 311,056.92 = 129,909.96 : x
  2. Step 2: Convert to fraction form
    225,403.92/311,056.92 = 129,909.96/x
  3. Step 3: Cross multiply
    225,403.92x = 311,056.92 × 129,909.96
  4. Step 4: Simplify right side
    225,403.92x = 40,409,392,034.92
  5. Step 5: Solve for x
    x = 40,409,392,034.92/225,403.92
  6. Step 6: Final answer
    x = 179,275.46

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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.