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Finding the Fourth Proportional to 220,353.40, 330,494.46 and 87,195.88

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Solution

The fourth proportional to 220,353.40, 330,494.46 and 87,195.88 is: 130,779.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,353.40 : 330,494.46 = 87,195.88 : x
  2. Step 2: Convert to fraction form
    220,353.40/330,494.46 = 87,195.88/x
  3. Step 3: Cross multiply
    220,353.40x = 330,494.46 × 87,195.88
  4. Step 4: Simplify right side
    220,353.40x = 28,817,755,274.82
  5. Step 5: Solve for x
    x = 28,817,755,274.82/220,353.40
  6. Step 6: Final answer
    x = 130,779.72

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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.