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Finding the Fourth Proportional to 218,061.92, 300,881.33 and 127,400.38

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Solution

The fourth proportional to 218,061.92, 300,881.33 and 127,400.38 is: 175,786.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,061.92 : 300,881.33 = 127,400.38 : x
  2. Step 2: Convert to fraction form
    218,061.92/300,881.33 = 127,400.38/x
  3. Step 3: Cross multiply
    218,061.92x = 300,881.33 × 127,400.38
  4. Step 4: Simplify right side
    218,061.92x = 38,332,395,582.08
  5. Step 5: Solve for x
    x = 38,332,395,582.08/218,061.92
  6. Step 6: Final answer
    x = 175,786.75

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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.