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Finding the Fourth Proportional to 201,229.60, 301,844.40 and 121,185.40

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Solution

The fourth proportional to 201,229.60, 301,844.40 and 121,185.40 is: 181,778.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,229.60 : 301,844.40 = 121,185.40 : x
  2. Step 2: Convert to fraction form
    201,229.60/301,844.40 = 121,185.40/x
  3. Step 3: Cross multiply
    201,229.60x = 301,844.40 × 121,185.40
  4. Step 4: Simplify right side
    201,229.60x = 36,579,134,351.76
  5. Step 5: Solve for x
    x = 36,579,134,351.76/201,229.60
  6. Step 6: Final answer
    x = 181,778.10

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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.