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Finding the Fourth Proportional to 302,286.88, 416,982.65 and 188,912.80

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Solution

The fourth proportional to 302,286.88, 416,982.65 and 188,912.80 is: 260,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,286.88 : 416,982.65 = 188,912.80 : x
  2. Step 2: Convert to fraction form
    302,286.88/416,982.65 = 188,912.80/x
  3. Step 3: Cross multiply
    302,286.88x = 416,982.65 × 188,912.80
  4. Step 4: Simplify right side
    302,286.88x = 78,773,360,831.41
  5. Step 5: Solve for x
    x = 78,773,360,831.41/302,286.88
  6. Step 6: Final answer
    x = 260,591.40

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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.