Home / 278,255.20-383,992.14-157,393.88

Finding the Fourth Proportional to 278,255.20, 383,992.14 and 157,393.88

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Solution

The fourth proportional to 278,255.20, 383,992.14 and 157,393.88 is: 217,203.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,255.20 : 383,992.14 = 157,393.88 : x
  2. Step 2: Convert to fraction form
    278,255.20/383,992.14 = 157,393.88/x
  3. Step 3: Cross multiply
    278,255.20x = 383,992.14 × 157,393.88
  4. Step 4: Simplify right side
    278,255.20x = 60,438,012,804.10
  5. Step 5: Solve for x
    x = 60,438,012,804.10/278,255.20
  6. Step 6: Final answer
    x = 217,203.53

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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.