Home / 278,103.17-383,758.75-157,227.68

Finding the Fourth Proportional to 278,103.17, 383,758.75 and 157,227.68

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Solution

The fourth proportional to 278,103.17, 383,758.75 and 157,227.68 is: 216,960.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,103.17 : 383,758.75 = 157,227.68 : x
  2. Step 2: Convert to fraction form
    278,103.17/383,758.75 = 157,227.68/x
  3. Step 3: Cross multiply
    278,103.17x = 383,758.75 × 157,227.68
  4. Step 4: Simplify right side
    278,103.17x = 60,337,497,942.20
  5. Step 5: Solve for x
    x = 60,337,497,942.20/278,103.17
  6. Step 6: Final answer
    x = 216,960.84

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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.