Home / 280,822.08-387,480.66-159,960.72

Finding the Fourth Proportional to 280,822.08, 387,480.66 and 159,960.72

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Solution

The fourth proportional to 280,822.08, 387,480.66 and 159,960.72 is: 220,715.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,822.08 : 387,480.66 = 159,960.72 : x
  2. Step 2: Convert to fraction form
    280,822.08/387,480.66 = 159,960.72/x
  3. Step 3: Cross multiply
    280,822.08x = 387,480.66 × 159,960.72
  4. Step 4: Simplify right side
    280,822.08x = 61,981,685,359.68
  5. Step 5: Solve for x
    x = 61,981,685,359.68/280,822.08
  6. Step 6: Final answer
    x = 220,715.14

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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.