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Finding the Fourth Proportional to 218,649.44, 301,633.13 and 127,949.79

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Solution

The fourth proportional to 218,649.44, 301,633.13 and 127,949.79 is: 176,510.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,649.44 : 301,633.13 = 127,949.79 : x
  2. Step 2: Convert to fraction form
    218,649.44/301,633.13 = 127,949.79/x
  3. Step 3: Cross multiply
    218,649.44x = 301,633.13 × 127,949.79
  4. Step 4: Simplify right side
    218,649.44x = 38,593,897,091.54
  5. Step 5: Solve for x
    x = 38,593,897,091.54/218,649.44
  6. Step 6: Final answer
    x = 176,510.38

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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.