Home / 278,933.52-418,390.56-89,391.09

Finding the Fourth Proportional to 278,933.52, 418,390.56 and 89,391.09

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Solution

The fourth proportional to 278,933.52, 418,390.56 and 89,391.09 is: 134,083.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,933.52 : 418,390.56 = 89,391.09 : x
  2. Step 2: Convert to fraction form
    278,933.52/418,390.56 = 89,391.09/x
  3. Step 3: Cross multiply
    278,933.52x = 418,390.56 × 89,391.09
  4. Step 4: Simplify right side
    278,933.52x = 37,400,388,204.11
  5. Step 5: Solve for x
    x = 37,400,388,204.11/278,933.52
  6. Step 6: Final answer
    x = 134,083.52

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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.