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Finding the Fourth Proportional to 218,212.76, 301,128.88 and 126,335.92

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Solution

The fourth proportional to 218,212.76, 301,128.88 and 126,335.92 is: 174,340.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,212.76 : 301,128.88 = 126,335.92 : x
  2. Step 2: Convert to fraction form
    218,212.76/301,128.88 = 126,335.92/x
  3. Step 3: Cross multiply
    218,212.76x = 301,128.88 × 126,335.92
  4. Step 4: Simplify right side
    218,212.76x = 38,043,394,093.37
  5. Step 5: Solve for x
    x = 38,043,394,093.37/218,212.76
  6. Step 6: Final answer
    x = 174,340.83

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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.