Home / 278,557.39-418,002.09-101,078.25

Finding the Fourth Proportional to 278,557.39, 418,002.09 and 101,078.25

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Solution

The fourth proportional to 278,557.39, 418,002.09 and 101,078.25 is: 151,677.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,557.39 : 418,002.09 = 101,078.25 : x
  2. Step 2: Convert to fraction form
    278,557.39/418,002.09 = 101,078.25/x
  3. Step 3: Cross multiply
    278,557.39x = 418,002.09 × 101,078.25
  4. Step 4: Simplify right side
    278,557.39x = 42,250,917,806.99
  5. Step 5: Solve for x
    x = 42,250,917,806.99/278,557.39
  6. Step 6: Final answer
    x = 151,677.60

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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.