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Finding the Fourth Proportional to 217,337.40, 326,151.90 and 128,496.60

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Solution

The fourth proportional to 217,337.40, 326,151.90 and 128,496.60 is: 192,831.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,337.40 : 326,151.90 = 128,496.60 : x
  2. Step 2: Convert to fraction form
    217,337.40/326,151.90 = 128,496.60/x
  3. Step 3: Cross multiply
    217,337.40x = 326,151.90 × 128,496.60
  4. Step 4: Simplify right side
    217,337.40x = 41,909,410,233.54
  5. Step 5: Solve for x
    x = 41,909,410,233.54/217,337.40
  6. Step 6: Final answer
    x = 192,831.10

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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.