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Finding the Fourth Proportional to 353,368.26, 487,540.26 and 200,398.55

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Solution

The fourth proportional to 353,368.26, 487,540.26 and 200,398.55 is: 276,488.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,368.26 : 487,540.26 = 200,398.55 : x
  2. Step 2: Convert to fraction form
    353,368.26/487,540.26 = 200,398.55/x
  3. Step 3: Cross multiply
    353,368.26x = 487,540.26 × 200,398.55
  4. Step 4: Simplify right side
    353,368.26x = 97,702,358,732.92
  5. Step 5: Solve for x
    x = 97,702,358,732.92/353,368.26
  6. Step 6: Final answer
    x = 276,488.78

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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.