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Finding the Fourth Proportional to 201,500.20, 301,991.10 and 122,530.60

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Solution

The fourth proportional to 201,500.20, 301,991.10 and 122,530.60 is: 183,638.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,500.20 : 301,991.10 = 122,530.60 : x
  2. Step 2: Convert to fraction form
    201,500.20/301,991.10 = 122,530.60/x
  3. Step 3: Cross multiply
    201,500.20x = 301,991.10 × 122,530.60
  4. Step 4: Simplify right side
    201,500.20x = 37,003,150,677.66
  5. Step 5: Solve for x
    x = 37,003,150,677.66/201,500.20
  6. Step 6: Final answer
    x = 183,638.28

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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.