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Finding the Fourth Proportional to 220,722, 330,295.32 and 191,240.88

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Solution

The fourth proportional to 220,722, 330,295.32 and 191,240.88 is: 286,178.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,722 : 330,295.32 = 191,240.88 : x
  2. Step 2: Convert to fraction form
    220,722/330,295.32 = 191,240.88/x
  3. Step 3: Cross multiply
    220,722x = 330,295.32 × 191,240.88
  4. Step 4: Simplify right side
    220,722x = 63,165,967,656.68
  5. Step 5: Solve for x
    x = 63,165,967,656.68/220,722
  6. Step 6: Final answer
    x = 286,178.85

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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.