Home / 278,844.21-418,244.61-89,324.28

Finding the Fourth Proportional to 278,844.21, 418,244.61 and 89,324.28

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Solution

The fourth proportional to 278,844.21, 418,244.61 and 89,324.28 is: 133,979.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,844.21 : 418,244.61 = 89,324.28 : x
  2. Step 2: Convert to fraction form
    278,844.21/418,244.61 = 89,324.28/x
  3. Step 3: Cross multiply
    278,844.21x = 418,244.61 × 89,324.28
  4. Step 4: Simplify right side
    278,844.21x = 37,359,398,652.13
  5. Step 5: Solve for x
    x = 37,359,398,652.13/278,844.21
  6. Step 6: Final answer
    x = 133,979.47

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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.