Home / 278,011.65-383,651.92-157,148.70

Finding the Fourth Proportional to 278,011.65, 383,651.92 and 157,148.70

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Solution

The fourth proportional to 278,011.65, 383,651.92 and 157,148.70 is: 216,862.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,011.65 : 383,651.92 = 157,148.70 : x
  2. Step 2: Convert to fraction form
    278,011.65/383,651.92 = 157,148.70/x
  3. Step 3: Cross multiply
    278,011.65x = 383,651.92 × 157,148.70
  4. Step 4: Simplify right side
    278,011.65x = 60,290,399,238.25
  5. Step 5: Solve for x
    x = 60,290,399,238.25/278,011.65
  6. Step 6: Final answer
    x = 216,862.85

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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.