Home / 280,238.20-386,738.04-152,920.78

Finding the Fourth Proportional to 280,238.20, 386,738.04 and 152,920.78

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Solution

The fourth proportional to 280,238.20, 386,738.04 and 152,920.78 is: 211,035.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,238.20 : 386,738.04 = 152,920.78 : x
  2. Step 2: Convert to fraction form
    280,238.20/386,738.04 = 152,920.78/x
  3. Step 3: Cross multiply
    280,238.20x = 386,738.04 × 152,920.78
  4. Step 4: Simplify right side
    280,238.20x = 59,140,282,339.08
  5. Step 5: Solve for x
    x = 59,140,282,339.08/280,238.20
  6. Step 6: Final answer
    x = 211,035.76

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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.