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Finding the Fourth Proportional to 220,476.81, 304,249.19 and 129,836.60

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Solution

The fourth proportional to 220,476.81, 304,249.19 and 129,836.60 is: 179,169.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,476.81 : 304,249.19 = 129,836.60 : x
  2. Step 2: Convert to fraction form
    220,476.81/304,249.19 = 129,836.60/x
  3. Step 3: Cross multiply
    220,476.81x = 304,249.19 × 129,836.60
  4. Step 4: Simplify right side
    220,476.81x = 39,502,680,382.35
  5. Step 5: Solve for x
    x = 39,502,680,382.35/220,476.81
  6. Step 6: Final answer
    x = 179,169.32

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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.