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Finding the Fourth Proportional to 220,274.71, 330,521.82 and 87,250.84

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Solution

The fourth proportional to 220,274.71, 330,521.82 and 87,250.84 is: 130,919.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,274.71 : 330,521.82 = 87,250.84 : x
  2. Step 2: Convert to fraction form
    220,274.71/330,521.82 = 87,250.84/x
  3. Step 3: Cross multiply
    220,274.71x = 330,521.82 × 87,250.84
  4. Step 4: Simplify right side
    220,274.71x = 28,838,305,279.83
  5. Step 5: Solve for x
    x = 28,838,305,279.83/220,274.71
  6. Step 6: Final answer
    x = 130,919.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.