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Finding the Fourth Proportional to 201,147.20, 301,720.80 and 198,036.80

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Solution

The fourth proportional to 201,147.20, 301,720.80 and 198,036.80 is: 297,055.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,147.20 : 301,720.80 = 198,036.80 : x
  2. Step 2: Convert to fraction form
    201,147.20/301,720.80 = 198,036.80/x
  3. Step 3: Cross multiply
    201,147.20x = 301,720.80 × 198,036.80
  4. Step 4: Simplify right side
    201,147.20x = 59,751,821,725.44
  5. Step 5: Solve for x
    x = 59,751,821,725.44/201,147.20
  6. Step 6: Final answer
    x = 297,055.20

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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.