Home / 278,388.18-417,583.08-118,422.90

Finding the Fourth Proportional to 278,388.18, 417,583.08 and 118,422.90

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Solution

The fourth proportional to 278,388.18, 417,583.08 and 118,422.90 is: 177,634.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,388.18 : 417,583.08 = 118,422.90 : x
  2. Step 2: Convert to fraction form
    278,388.18/417,583.08 = 118,422.90/x
  3. Step 3: Cross multiply
    278,388.18x = 417,583.08 × 118,422.90
  4. Step 4: Simplify right side
    278,388.18x = 49,451,399,324.53
  5. Step 5: Solve for x
    x = 49,451,399,324.53/278,388.18
  6. Step 6: Final answer
    x = 177,634.69

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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.