Home / 281,322.23-387,821.12-200,609.78

Finding the Fourth Proportional to 281,322.23, 387,821.12 and 200,609.78

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Solution

The fourth proportional to 281,322.23, 387,821.12 and 200,609.78 is: 276,553.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,322.23 : 387,821.12 = 200,609.78 : x
  2. Step 2: Convert to fraction form
    281,322.23/387,821.12 = 200,609.78/x
  3. Step 3: Cross multiply
    281,322.23x = 387,821.12 × 200,609.78
  4. Step 4: Simplify right side
    281,322.23x = 77,800,706,620.40
  5. Step 5: Solve for x
    x = 77,800,706,620.40/281,322.23
  6. Step 6: Final answer
    x = 276,553.72

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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.