Home / 279,126.25-385,182.49-158,275.68

Finding the Fourth Proportional to 279,126.25, 385,182.49 and 158,275.68

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Solution

The fourth proportional to 279,126.25, 385,182.49 and 158,275.68 is: 218,413.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,126.25 : 385,182.49 = 158,275.68 : x
  2. Step 2: Convert to fraction form
    279,126.25/385,182.49 = 158,275.68/x
  3. Step 3: Cross multiply
    279,126.25x = 385,182.49 × 158,275.68
  4. Step 4: Simplify right side
    279,126.25x = 60,965,020,528.84
  5. Step 5: Solve for x
    x = 60,965,020,528.84/279,126.25
  6. Step 6: Final answer
    x = 218,413.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.