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Finding the Fourth Proportional to 193,468.40, 290,215.60 and 68,775.92

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Solution

The fourth proportional to 193,468.40, 290,215.60 and 68,775.92 is: 103,168.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,468.40 : 290,215.60 = 68,775.92 : x
  2. Step 2: Convert to fraction form
    193,468.40/290,215.60 = 68,775.92/x
  3. Step 3: Cross multiply
    193,468.40x = 290,215.60 × 68,775.92
  4. Step 4: Simplify right side
    193,468.40x = 19,959,844,888.35
  5. Step 5: Solve for x
    x = 19,959,844,888.35/193,468.40
  6. Step 6: Final answer
    x = 103,168.50

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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.