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Finding the Fourth Proportional to 193,471.20, 290,206.80 and 53,229.60

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Solution

The fourth proportional to 193,471.20, 290,206.80 and 53,229.60 is: 79,844.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,471.20 : 290,206.80 = 53,229.60 : x
  2. Step 2: Convert to fraction form
    193,471.20/290,206.80 = 53,229.60/x
  3. Step 3: Cross multiply
    193,471.20x = 290,206.80 × 53,229.60
  4. Step 4: Simplify right side
    193,471.20x = 15,447,591,881.28
  5. Step 5: Solve for x
    x = 15,447,591,881.28/193,471.20
  6. Step 6: Final answer
    x = 79,844.40

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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.