Home / 278,844.14-418,265.30-79,164.66

Finding the Fourth Proportional to 278,844.14, 418,265.30 and 79,164.66

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Solution

The fourth proportional to 278,844.14, 418,265.30 and 79,164.66 is: 118,746.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,844.14 : 418,265.30 = 79,164.66 : x
  2. Step 2: Convert to fraction form
    278,844.14/418,265.30 = 79,164.66/x
  3. Step 3: Cross multiply
    278,844.14x = 418,265.30 × 79,164.66
  4. Step 4: Simplify right side
    278,844.14x = 33,111,830,264.30
  5. Step 5: Solve for x
    x = 33,111,830,264.30/278,844.14
  6. Step 6: Final answer
    x = 118,746.73

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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.