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Finding the Fourth Proportional to 217,344.60, 326,114.10 and 77,203.80

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Solution

The fourth proportional to 217,344.60, 326,114.10 and 77,203.80 is: 115,840.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,344.60 : 326,114.10 = 77,203.80 : x
  2. Step 2: Convert to fraction form
    217,344.60/326,114.10 = 77,203.80/x
  3. Step 3: Cross multiply
    217,344.60x = 326,114.10 × 77,203.80
  4. Step 4: Simplify right side
    217,344.60x = 25,177,247,753.58
  5. Step 5: Solve for x
    x = 25,177,247,753.58/217,344.60
  6. Step 6: Final answer
    x = 115,840.23

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1.5x scale

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.