Home / 278,766.45-418,132.73-98,860.79

Finding the Fourth Proportional to 278,766.45, 418,132.73 and 98,860.79

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Solution

The fourth proportional to 278,766.45, 418,132.73 and 98,860.79 is: 148,285.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,766.45 : 418,132.73 = 98,860.79 : x
  2. Step 2: Convert to fraction form
    278,766.45/418,132.73 = 98,860.79/x
  3. Step 3: Cross multiply
    278,766.45x = 418,132.73 × 98,860.79
  4. Step 4: Simplify right side
    278,766.45x = 41,336,929,427.69
  5. Step 5: Solve for x
    x = 41,336,929,427.69/278,766.45
  6. Step 6: Final answer
    x = 148,285.17

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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.