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Finding the Fourth Proportional to 217,062.20, 325,593.30 and 76,802.60

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Solution

The fourth proportional to 217,062.20, 325,593.30 and 76,802.60 is: 115,203.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,062.20 : 325,593.30 = 76,802.60 : x
  2. Step 2: Convert to fraction form
    217,062.20/325,593.30 = 76,802.60/x
  3. Step 3: Cross multiply
    217,062.20x = 325,593.30 × 76,802.60
  4. Step 4: Simplify right side
    217,062.20x = 25,006,411,982.58
  5. Step 5: Solve for x
    x = 25,006,411,982.58/217,062.20
  6. Step 6: Final answer
    x = 115,203.90

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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.