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Finding the Fourth Proportional to 371,220.70, 512,284.94 and 201,454.83

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Solution

The fourth proportional to 371,220.70, 512,284.94 and 201,454.83 is: 278,007.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,220.70 : 512,284.94 = 201,454.83 : x
  2. Step 2: Convert to fraction form
    371,220.70/512,284.94 = 201,454.83/x
  3. Step 3: Cross multiply
    371,220.70x = 512,284.94 × 201,454.83
  4. Step 4: Simplify right side
    371,220.70x = 103,202,275,499.26
  5. Step 5: Solve for x
    x = 103,202,275,499.26/371,220.70
  6. Step 6: Final answer
    x = 278,007.87

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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.