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Finding the Fourth Proportional to 220,145.96, 330,215.40 and 87,027.46

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Solution

The fourth proportional to 220,145.96, 330,215.40 and 87,027.46 is: 130,539.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,145.96 : 330,215.40 = 87,027.46 : x
  2. Step 2: Convert to fraction form
    220,145.96/330,215.40 = 87,027.46/x
  3. Step 3: Cross multiply
    220,145.96x = 330,215.40 × 87,027.46
  4. Step 4: Simplify right side
    220,145.96x = 28,737,806,689.35
  5. Step 5: Solve for x
    x = 28,737,806,689.35/220,145.96
  6. Step 6: Final answer
    x = 130,539.79

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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.