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Finding the Fourth Proportional to 200,531.30, 300,785.88 and 67,397.82

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Solution

The fourth proportional to 200,531.30, 300,785.88 and 67,397.82 is: 101,093.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,531.30 : 300,785.88 = 67,397.82 : x
  2. Step 2: Convert to fraction form
    200,531.30/300,785.88 = 67,397.82/x
  3. Step 3: Cross multiply
    200,531.30x = 300,785.88 × 67,397.82
  4. Step 4: Simplify right side
    200,531.30x = 20,272,312,598.78
  5. Step 5: Solve for x
    x = 20,272,312,598.78/200,531.30
  6. Step 6: Final answer
    x = 101,093.01

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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.