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Finding the Fourth Proportional to 353,552.15, 487,913.03 and 200,596.78

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Solution

The fourth proportional to 353,552.15, 487,913.03 and 200,596.78 is: 276,829.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,552.15 : 487,913.03 = 200,596.78 : x
  2. Step 2: Convert to fraction form
    353,552.15/487,913.03 = 200,596.78/x
  3. Step 3: Cross multiply
    353,552.15x = 487,913.03 × 200,596.78
  4. Step 4: Simplify right side
    353,552.15x = 97,873,782,738.04
  5. Step 5: Solve for x
    x = 97,873,782,738.04/353,552.15
  6. Step 6: Final answer
    x = 276,829.83

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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.