Home / 280,839.04-387,512.68-159,982.72

Finding the Fourth Proportional to 280,839.04, 387,512.68 and 159,982.72

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Solution

The fourth proportional to 280,839.04, 387,512.68 and 159,982.72 is: 220,750.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,839.04 : 387,512.68 = 159,982.72 : x
  2. Step 2: Convert to fraction form
    280,839.04/387,512.68 = 159,982.72/x
  3. Step 3: Cross multiply
    280,839.04x = 387,512.68 × 159,982.72
  4. Step 4: Simplify right side
    280,839.04x = 61,995,332,580.89
  5. Step 5: Solve for x
    x = 61,995,332,580.89/280,839.04
  6. Step 6: Final answer
    x = 220,750.41

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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.