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Finding the Fourth Proportional to 201,635.40, 302,453.10 and 68,665.80

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Solution

The fourth proportional to 201,635.40, 302,453.10 and 68,665.80 is: 102,998.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,635.40 : 302,453.10 = 68,665.80 : x
  2. Step 2: Convert to fraction form
    201,635.40/302,453.10 = 68,665.80/x
  3. Step 3: Cross multiply
    201,635.40x = 302,453.10 × 68,665.80
  4. Step 4: Simplify right side
    201,635.40x = 20,768,184,073.98
  5. Step 5: Solve for x
    x = 20,768,184,073.98/201,635.40
  6. Step 6: Final answer
    x = 102,998.70

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1.5x scale

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.