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Finding the Fourth Proportional to 217,291.50, 325,748.88 and 84,080.10

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Solution

The fourth proportional to 217,291.50, 325,748.88 and 84,080.10 is: 126,047.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,291.50 : 325,748.88 = 84,080.10 : x
  2. Step 2: Convert to fraction form
    217,291.50/325,748.88 = 84,080.10/x
  3. Step 3: Cross multiply
    217,291.50x = 325,748.88 × 84,080.10
  4. Step 4: Simplify right side
    217,291.50x = 27,388,998,405.29
  5. Step 5: Solve for x
    x = 27,388,998,405.29/217,291.50
  6. Step 6: Final answer
    x = 126,047.26

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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.