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Finding the Fourth Proportional to 201,231.60, 301,847.40 and 121,187.40

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Solution

The fourth proportional to 201,231.60, 301,847.40 and 121,187.40 is: 181,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,231.60 : 301,847.40 = 121,187.40 : x
  2. Step 2: Convert to fraction form
    201,231.60/301,847.40 = 121,187.40/x
  3. Step 3: Cross multiply
    201,231.60x = 301,847.40 × 121,187.40
  4. Step 4: Simplify right side
    201,231.60x = 36,580,101,602.76
  5. Step 5: Solve for x
    x = 36,580,101,602.76/201,231.60
  6. Step 6: Final answer
    x = 181,781.10

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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.