Home / 278,250.75-383,986.04-157,389.44

Finding the Fourth Proportional to 278,250.75, 383,986.04 and 157,389.44

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Solution

The fourth proportional to 278,250.75, 383,986.04 and 157,389.44 is: 217,197.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,250.75 : 383,986.04 = 157,389.44 : x
  2. Step 2: Convert to fraction form
    278,250.75/383,986.04 = 157,389.44/x
  3. Step 3: Cross multiply
    278,250.75x = 383,986.04 × 157,389.44
  4. Step 4: Simplify right side
    278,250.75x = 60,435,345,096.54
  5. Step 5: Solve for x
    x = 60,435,345,096.54/278,250.75
  6. Step 6: Final answer
    x = 217,197.42

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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.