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Finding the Fourth Proportional to 353,290.82, 487,530.90 and 200,342.97

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Solution

The fourth proportional to 353,290.82, 487,530.90 and 200,342.97 is: 276,467.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,290.82 : 487,530.90 = 200,342.97 : x
  2. Step 2: Convert to fraction form
    353,290.82/487,530.90 = 200,342.97/x
  3. Step 3: Cross multiply
    353,290.82x = 487,530.90 × 200,342.97
  4. Step 4: Simplify right side
    353,290.82x = 97,673,388,472.77
  5. Step 5: Solve for x
    x = 97,673,388,472.77/353,290.82
  6. Step 6: Final answer
    x = 276,467.39

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1.5x scale

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.