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Finding the Fourth Proportional to 201,907.40, 302,861.10 and 131,048.60

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Solution

The fourth proportional to 201,907.40, 302,861.10 and 131,048.60 is: 196,572.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,907.40 : 302,861.10 = 131,048.60 : x
  2. Step 2: Convert to fraction form
    201,907.40/302,861.10 = 131,048.60/x
  3. Step 3: Cross multiply
    201,907.40x = 302,861.10 × 131,048.60
  4. Step 4: Simplify right side
    201,907.40x = 39,689,523,149.46
  5. Step 5: Solve for x
    x = 39,689,523,149.46/201,907.40
  6. Step 6: Final answer
    x = 196,572.90

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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.