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Finding the Fourth Proportional to 217,265.90, 325,801.65 and 84,101.90

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Solution

The fourth proportional to 217,265.90, 325,801.65 and 84,101.90 is: 126,115.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,265.90 : 325,801.65 = 84,101.90 : x
  2. Step 2: Convert to fraction form
    217,265.90/325,801.65 = 84,101.90/x
  3. Step 3: Cross multiply
    217,265.90x = 325,801.65 × 84,101.90
  4. Step 4: Simplify right side
    217,265.90x = 27,400,537,788.14
  5. Step 5: Solve for x
    x = 27,400,537,788.14/217,265.90
  6. Step 6: Final answer
    x = 126,115.22

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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.