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Finding the Fourth Proportional to 217,720.60, 300,487.22 and 132,886.96

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Solution

The fourth proportional to 217,720.60, 300,487.22 and 132,886.96 is: 183,404.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,720.60 : 300,487.22 = 132,886.96 : x
  2. Step 2: Convert to fraction form
    217,720.60/300,487.22 = 132,886.96/x
  3. Step 3: Cross multiply
    217,720.60x = 300,487.22 × 132,886.96
  4. Step 4: Simplify right side
    217,720.60x = 39,930,833,184.65
  5. Step 5: Solve for x
    x = 39,930,833,184.65/217,720.60
  6. Step 6: Final answer
    x = 183,404.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.