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Finding the Fourth Proportional to 654,113.80, 981,170.70 and 204,869.82

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Solution

The fourth proportional to 654,113.80, 981,170.70 and 204,869.82 is: 307,304.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,113.80 : 981,170.70 = 204,869.82 : x
  2. Step 2: Convert to fraction form
    654,113.80/981,170.70 = 204,869.82/x
  3. Step 3: Cross multiply
    654,113.80x = 981,170.70 × 204,869.82
  4. Step 4: Simplify right side
    654,113.80x = 201,012,268,761.80
  5. Step 5: Solve for x
    x = 201,012,268,761.80/654,113.80
  6. Step 6: Final answer
    x = 307,304.74

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Double scale
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Similar ratio
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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.