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Finding the Fourth Proportional to 209,344.76, 288,772.78 and 131,696.93

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Solution

The fourth proportional to 209,344.76, 288,772.78 and 131,696.93 is: 181,664.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,344.76 : 288,772.78 = 131,696.93 : x
  2. Step 2: Convert to fraction form
    209,344.76/288,772.78 = 131,696.93/x
  3. Step 3: Cross multiply
    209,344.76x = 288,772.78 × 131,696.93
  4. Step 4: Simplify right side
    209,344.76x = 38,030,488,593.57
  5. Step 5: Solve for x
    x = 38,030,488,593.57/209,344.76
  6. Step 6: Final answer
    x = 181,664.39

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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.