Home / 278,745,357.61-418,028,530.02-91,957,316.66

Finding the Fourth Proportional to 278,745,357.61, 418,028,530.02 and 91,957,316.66

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Solution

The fourth proportional to 278,745,357.61, 418,028,530.02 and 91,957,316.66 is: 137,906,447.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,745,357.61 : 418,028,530.02 = 91,957,316.66 : x
  2. Step 2: Convert to fraction form
    278,745,357.61/418,028,530.02 = 91,957,316.66/x
  3. Step 3: Cross multiply
    278,745,357.61x = 418,028,530.02 × 91,957,316.66
  4. Step 4: Simplify right side
    278,745,357.61x = 38,440,781,910,223,608
  5. Step 5: Solve for x
    x = 38,440,781,910,223,608/278,745,357.61
  6. Step 6: Final answer
    x = 137,906,447.09

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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.