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Finding the Fourth Proportional to 221,875.96, 332,680.62 and 86,779

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Solution

The fourth proportional to 221,875.96, 332,680.62 and 86,779 is: 130,116.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,875.96 : 332,680.62 = 86,779 : x
  2. Step 2: Convert to fraction form
    221,875.96/332,680.62 = 86,779/x
  3. Step 3: Cross multiply
    221,875.96x = 332,680.62 × 86,779
  4. Step 4: Simplify right side
    221,875.96x = 28,869,691,522.98
  5. Step 5: Solve for x
    x = 28,869,691,522.98/221,875.96
  6. Step 6: Final answer
    x = 130,116.36

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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.