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Finding the Fourth Proportional to 218,632.77, 301,713.85 and 126,769.86

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Solution

The fourth proportional to 218,632.77, 301,713.85 and 126,769.86 is: 174,942.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,632.77 : 301,713.85 = 126,769.86 : x
  2. Step 2: Convert to fraction form
    218,632.77/301,713.85 = 126,769.86/x
  3. Step 3: Cross multiply
    218,632.77x = 301,713.85 × 126,769.86
  4. Step 4: Simplify right side
    218,632.77x = 38,248,222,524.56
  5. Step 5: Solve for x
    x = 38,248,222,524.56/218,632.77
  6. Step 6: Final answer
    x = 174,942.77

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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.