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Finding the Fourth Proportional to 220,108.34, 330,293.67 and 79,877.90

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Solution

The fourth proportional to 220,108.34, 330,293.67 and 79,877.90 is: 119,864.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,108.34 : 330,293.67 = 79,877.90 : x
  2. Step 2: Convert to fraction form
    220,108.34/330,293.67 = 79,877.90/x
  3. Step 3: Cross multiply
    220,108.34x = 330,293.67 × 79,877.90
  4. Step 4: Simplify right side
    220,108.34x = 26,383,164,742.89
  5. Step 5: Solve for x
    x = 26,383,164,742.89/220,108.34
  6. Step 6: Final answer
    x = 119,864.45

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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.