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Finding the Fourth Proportional to 274,858.80, 412,288.20 and 134,890.80

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Solution

The fourth proportional to 274,858.80, 412,288.20 and 134,890.80 is: 202,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,858.80 : 412,288.20 = 134,890.80 : x
  2. Step 2: Convert to fraction form
    274,858.80/412,288.20 = 134,890.80/x
  3. Step 3: Cross multiply
    274,858.80x = 412,288.20 × 134,890.80
  4. Step 4: Simplify right side
    274,858.80x = 55,613,885,128.56
  5. Step 5: Solve for x
    x = 55,613,885,128.56/274,858.80
  6. Step 6: Final answer
    x = 202,336.20

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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.