Home / 278,786.73-384,713.22-157,925.55

Finding the Fourth Proportional to 278,786.73, 384,713.22 and 157,925.55

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Solution

The fourth proportional to 278,786.73, 384,713.22 and 157,925.55 is: 217,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,786.73 : 384,713.22 = 157,925.55 : x
  2. Step 2: Convert to fraction form
    278,786.73/384,713.22 = 157,925.55/x
  3. Step 3: Cross multiply
    278,786.73x = 384,713.22 × 157,925.55
  4. Step 4: Simplify right side
    278,786.73x = 60,756,046,860.77
  5. Step 5: Solve for x
    x = 60,756,046,860.77/278,786.73
  6. Step 6: Final answer
    x = 217,930.20

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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.