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Finding the Fourth Proportional to 225,211.80, 310,795.92 and 123,246.12

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Solution

The fourth proportional to 225,211.80, 310,795.92 and 123,246.12 is: 170,081.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,211.80 : 310,795.92 = 123,246.12 : x
  2. Step 2: Convert to fraction form
    225,211.80/310,795.92 = 123,246.12/x
  3. Step 3: Cross multiply
    225,211.80x = 310,795.92 × 123,246.12
  4. Step 4: Simplify right side
    225,211.80x = 38,304,391,251.83
  5. Step 5: Solve for x
    x = 38,304,391,251.83/225,211.80
  6. Step 6: Final answer
    x = 170,081.64

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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.