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Finding the Fourth Proportional to 201,995.80, 302,993.70 and 68,864.20

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Solution

The fourth proportional to 201,995.80, 302,993.70 and 68,864.20 is: 103,296.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,995.80 : 302,993.70 = 68,864.20 : x
  2. Step 2: Convert to fraction form
    201,995.80/302,993.70 = 68,864.20/x
  3. Step 3: Cross multiply
    201,995.80x = 302,993.70 × 68,864.20
  4. Step 4: Simplify right side
    201,995.80x = 20,865,418,755.54
  5. Step 5: Solve for x
    x = 20,865,418,755.54/201,995.80
  6. Step 6: Final answer
    x = 103,296.30

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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.