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Finding the Fourth Proportional to 220,519.42, 330,888.58 and 87,396.72

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Solution

The fourth proportional to 220,519.42, 330,888.58 and 87,396.72 is: 131,138.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,519.42 : 330,888.58 = 87,396.72 : x
  2. Step 2: Convert to fraction form
    220,519.42/330,888.58 = 87,396.72/x
  3. Step 3: Cross multiply
    220,519.42x = 330,888.58 × 87,396.72
  4. Step 4: Simplify right side
    220,519.42x = 28,918,576,577.46
  5. Step 5: Solve for x
    x = 28,918,576,577.46/220,519.42
  6. Step 6: Final answer
    x = 131,138.46

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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.