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Finding the Fourth Proportional to 201,640.60, 302,115.30 and 131,483.80

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Solution

The fourth proportional to 201,640.60, 302,115.30 and 131,483.80 is: 197,000.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,640.60 : 302,115.30 = 131,483.80 : x
  2. Step 2: Convert to fraction form
    201,640.60/302,115.30 = 131,483.80/x
  3. Step 3: Cross multiply
    201,640.60x = 302,115.30 × 131,483.80
  4. Step 4: Simplify right side
    201,640.60x = 39,723,267,682.14
  5. Step 5: Solve for x
    x = 39,723,267,682.14/201,640.60
  6. Step 6: Final answer
    x = 197,000.34

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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.