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Finding the Fourth Proportional to 193,646.78, 290,351.25 and 67,232.71

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Solution

The fourth proportional to 193,646.78, 290,351.25 and 67,232.71 is: 100,807.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,646.78 : 290,351.25 = 67,232.71 : x
  2. Step 2: Convert to fraction form
    193,646.78/290,351.25 = 67,232.71/x
  3. Step 3: Cross multiply
    193,646.78x = 290,351.25 × 67,232.71
  4. Step 4: Simplify right side
    193,646.78x = 19,521,100,652.08
  5. Step 5: Solve for x
    x = 19,521,100,652.08/193,646.78
  6. Step 6: Final answer
    x = 100,807.78

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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.