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Finding the Fourth Proportional to 217,967.18, 326,774.34 and 68,130.34

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Solution

The fourth proportional to 217,967.18, 326,774.34 and 68,130.34 is: 102,140.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,967.18 : 326,774.34 = 68,130.34 : x
  2. Step 2: Convert to fraction form
    217,967.18/326,774.34 = 68,130.34/x
  3. Step 3: Cross multiply
    217,967.18x = 326,774.34 × 68,130.34
  4. Step 4: Simplify right side
    217,967.18x = 22,263,246,070.54
  5. Step 5: Solve for x
    x = 22,263,246,070.54/217,967.18
  6. Step 6: Final answer
    x = 102,140.36

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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.