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Finding the Fourth Proportional to 220,956, 330,816.48 and 119,390.24

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Solution

The fourth proportional to 220,956, 330,816.48 and 119,390.24 is: 178,751.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,956 : 330,816.48 = 119,390.24 : x
  2. Step 2: Convert to fraction form
    220,956/330,816.48 = 119,390.24/x
  3. Step 3: Cross multiply
    220,956x = 330,816.48 × 119,390.24
  4. Step 4: Simplify right side
    220,956x = 39,496,258,943.16
  5. Step 5: Solve for x
    x = 39,496,258,943.16/220,956
  6. Step 6: Final answer
    x = 178,751.69

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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.