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Finding the Fourth Proportional to 217,706.66, 326,684.36 and 84,569.59

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Solution

The fourth proportional to 217,706.66, 326,684.36 and 84,569.59 is: 126,902.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,706.66 : 326,684.36 = 84,569.59 : x
  2. Step 2: Convert to fraction form
    217,706.66/326,684.36 = 84,569.59/x
  3. Step 3: Cross multiply
    217,706.66x = 326,684.36 × 84,569.59
  4. Step 4: Simplify right side
    217,706.66x = 27,627,562,384.61
  5. Step 5: Solve for x
    x = 27,627,562,384.61/217,706.66
  6. Step 6: Final answer
    x = 126,902.70

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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.