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Finding the Fourth Proportional to 218,211.76, 301,127.49 and 126,334.91

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Solution

The fourth proportional to 218,211.76, 301,127.49 and 126,334.91 is: 174,339.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,211.76 : 301,127.49 = 126,334.91 : x
  2. Step 2: Convert to fraction form
    218,211.76/301,127.49 = 126,334.91/x
  3. Step 3: Cross multiply
    218,211.76x = 301,127.49 × 126,334.91
  4. Step 4: Simplify right side
    218,211.76x = 38,042,914,347.68
  5. Step 5: Solve for x
    x = 38,042,914,347.68/218,211.76
  6. Step 6: Final answer
    x = 174,339.43

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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.