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Finding the Fourth Proportional to 220,330.64, 330,436.92 and 95,642

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Solution

The fourth proportional to 220,330.64, 330,436.92 and 95,642 is: 143,437.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,330.64 : 330,436.92 = 95,642 : x
  2. Step 2: Convert to fraction form
    220,330.64/330,436.92 = 95,642/x
  3. Step 3: Cross multiply
    220,330.64x = 330,436.92 × 95,642
  4. Step 4: Simplify right side
    220,330.64x = 31,603,647,902.64
  5. Step 5: Solve for x
    x = 31,603,647,902.64/220,330.64
  6. Step 6: Final answer
    x = 143,437.37

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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.