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Finding the Fourth Proportional to 217,641.20, 300,484.89 and 149,636.43

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Solution

The fourth proportional to 217,641.20, 300,484.89 and 149,636.43 is: 206,594.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,641.20 : 300,484.89 = 149,636.43 : x
  2. Step 2: Convert to fraction form
    217,641.20/300,484.89 = 149,636.43/x
  3. Step 3: Cross multiply
    217,641.20x = 300,484.89 × 149,636.43
  4. Step 4: Simplify right side
    217,641.20x = 44,963,486,208.54
  5. Step 5: Solve for x
    x = 44,963,486,208.54/217,641.20
  6. Step 6: Final answer
    x = 206,594.56

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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.