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Finding the Fourth Proportional to 371,396.17, 512,532.89 and 201,630.25

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Solution

The fourth proportional to 371,396.17, 512,532.89 and 201,630.25 is: 278,253.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,396.17 : 512,532.89 = 201,630.25 : x
  2. Step 2: Convert to fraction form
    371,396.17/512,532.89 = 201,630.25/x
  3. Step 3: Cross multiply
    371,396.17x = 512,532.89 × 201,630.25
  4. Step 4: Simplify right side
    371,396.17x = 103,342,134,743.92
  5. Step 5: Solve for x
    x = 103,342,134,743.92/371,396.17
  6. Step 6: Final answer
    x = 278,253.10

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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.