Home / 278,997.12-385,024.32-151,680.96

Finding the Fourth Proportional to 278,997.12, 385,024.32 and 151,680.96

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Solution

The fourth proportional to 278,997.12, 385,024.32 and 151,680.96 is: 209,324.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,997.12 : 385,024.32 = 151,680.96 : x
  2. Step 2: Convert to fraction form
    278,997.12/385,024.32 = 151,680.96/x
  3. Step 3: Cross multiply
    278,997.12x = 385,024.32 × 151,680.96
  4. Step 4: Simplify right side
    278,997.12x = 58,400,858,480.95
  5. Step 5: Solve for x
    x = 58,400,858,480.95/278,997.12
  6. Step 6: Final answer
    x = 209,324.23

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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.