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Finding the Fourth Proportional to 273,212.40, 409,640.40 and 245,218.80

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Solution

The fourth proportional to 273,212.40, 409,640.40 and 245,218.80 is: 367,668.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,212.40 : 409,640.40 = 245,218.80 : x
  2. Step 2: Convert to fraction form
    273,212.40/409,640.40 = 245,218.80/x
  3. Step 3: Cross multiply
    273,212.40x = 409,640.40 × 245,218.80
  4. Step 4: Simplify right side
    273,212.40x = 100,451,527,319.52
  5. Step 5: Solve for x
    x = 100,451,527,319.52/273,212.40
  6. Step 6: Final answer
    x = 367,668.26

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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.