Home / 278,890.03-418,362.68-89,302.85

Finding the Fourth Proportional to 278,890.03, 418,362.68 and 89,302.85

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Solution

The fourth proportional to 278,890.03, 418,362.68 and 89,302.85 is: 133,963.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,890.03 : 418,362.68 = 89,302.85 : x
  2. Step 2: Convert to fraction form
    278,890.03/418,362.68 = 89,302.85/x
  3. Step 3: Cross multiply
    278,890.03x = 418,362.68 × 89,302.85
  4. Step 4: Simplify right side
    278,890.03x = 37,360,977,789.08
  5. Step 5: Solve for x
    x = 37,360,977,789.08/278,890.03
  6. Step 6: Final answer
    x = 133,963.12

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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.