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Finding the Fourth Proportional to 281,049.45, 421,570.13 and 70,685.97

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Solution

The fourth proportional to 281,049.45, 421,570.13 and 70,685.97 is: 106,027.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,049.45 : 421,570.13 = 70,685.97 : x
  2. Step 2: Convert to fraction form
    281,049.45/421,570.13 = 70,685.97/x
  3. Step 3: Cross multiply
    281,049.45x = 421,570.13 × 70,685.97
  4. Step 4: Simplify right side
    281,049.45x = 29,799,093,208.65
  5. Step 5: Solve for x
    x = 29,799,093,208.65/281,049.45
  6. Step 6: Final answer
    x = 106,027.94

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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.