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Finding the Fourth Proportional to 281,689.75, 422,550.02 and 71,329.51

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Solution

The fourth proportional to 281,689.75, 422,550.02 and 71,329.51 is: 106,998.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,689.75 : 422,550.02 = 71,329.51 : x
  2. Step 2: Convert to fraction form
    281,689.75/422,550.02 = 71,329.51/x
  3. Step 3: Cross multiply
    281,689.75x = 422,550.02 × 71,329.51
  4. Step 4: Simplify right side
    281,689.75x = 30,140,286,182.37
  5. Step 5: Solve for x
    x = 30,140,286,182.37/281,689.75
  6. Step 6: Final answer
    x = 106,998.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.