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Finding the Fourth Proportional to 200,387.88, 300,587.28 and 60,146.52

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Solution

The fourth proportional to 200,387.88, 300,587.28 and 60,146.52 is: 90,221.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,387.88 : 300,587.28 = 60,146.52 : x
  2. Step 2: Convert to fraction form
    200,387.88/300,587.28 = 60,146.52/x
  3. Step 3: Cross multiply
    200,387.88x = 300,587.28 × 60,146.52
  4. Step 4: Simplify right side
    200,387.88x = 18,079,278,848.27
  5. Step 5: Solve for x
    x = 18,079,278,848.27/200,387.88
  6. Step 6: Final answer
    x = 90,221.42

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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.