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Finding the Fourth Proportional to 220,164.71, 303,828.51 and 129,524.09

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Solution

The fourth proportional to 220,164.71, 303,828.51 and 129,524.09 is: 178,743.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,164.71 : 303,828.51 = 129,524.09 : x
  2. Step 2: Convert to fraction form
    220,164.71/303,828.51 = 129,524.09/x
  3. Step 3: Cross multiply
    220,164.71x = 303,828.51 × 129,524.09
  4. Step 4: Simplify right side
    220,164.71x = 39,353,109,754.66
  5. Step 5: Solve for x
    x = 39,353,109,754.66/220,164.71
  6. Step 6: Final answer
    x = 178,743.95

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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.