Home / 278,923.10-418,412.32-89,335.84

Finding the Fourth Proportional to 278,923.10, 418,412.32 and 89,335.84

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Solution

The fourth proportional to 278,923.10, 418,412.32 and 89,335.84 is: 134,012.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,923.10 : 418,412.32 = 89,335.84 : x
  2. Step 2: Convert to fraction form
    278,923.10/418,412.32 = 89,335.84/x
  3. Step 3: Cross multiply
    278,923.10x = 418,412.32 × 89,335.84
  4. Step 4: Simplify right side
    278,923.10x = 37,379,216,073.55
  5. Step 5: Solve for x
    x = 37,379,216,073.55/278,923.10
  6. Step 6: Final answer
    x = 134,012.62

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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.