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Finding the Fourth Proportional to 371,411.72, 512,540.22 and 201,645.84

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Solution

The fourth proportional to 371,411.72, 512,540.22 and 201,645.84 is: 278,266.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,411.72 : 512,540.22 = 201,645.84 : x
  2. Step 2: Convert to fraction form
    371,411.72/512,540.22 = 201,645.84/x
  3. Step 3: Cross multiply
    371,411.72x = 512,540.22 × 201,645.84
  4. Step 4: Simplify right side
    371,411.72x = 103,351,603,195.69
  5. Step 5: Solve for x
    x = 103,351,603,195.69/371,411.72
  6. Step 6: Final answer
    x = 278,266.94

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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.