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Finding the Fourth Proportional to 234,990.72, 352,544.40 and 68,778.72

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Solution

The fourth proportional to 234,990.72, 352,544.40 and 68,778.72 is: 103,185.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,990.72 : 352,544.40 = 68,778.72 : x
  2. Step 2: Convert to fraction form
    234,990.72/352,544.40 = 68,778.72/x
  3. Step 3: Cross multiply
    234,990.72x = 352,544.40 × 68,778.72
  4. Step 4: Simplify right side
    234,990.72x = 24,247,552,575.17
  5. Step 5: Solve for x
    x = 24,247,552,575.17/234,990.72
  6. Step 6: Final answer
    x = 103,185.15

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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.