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Finding the Fourth Proportional to 371,388.40, 512,513.24 and 201,618.16

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Solution

The fourth proportional to 371,388.40, 512,513.24 and 201,618.16 is: 278,231.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,388.40 : 512,513.24 = 201,618.16 : x
  2. Step 2: Convert to fraction form
    371,388.40/512,513.24 = 201,618.16/x
  3. Step 3: Cross multiply
    371,388.40x = 512,513.24 × 201,618.16
  4. Step 4: Simplify right side
    371,388.40x = 103,331,976,424.44
  5. Step 5: Solve for x
    x = 103,331,976,424.44/371,388.40
  6. Step 6: Final answer
    x = 278,231.57

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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.