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Finding the Fourth Proportional to 266,790.40, 400,070.40 and 133,619.20

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Solution

The fourth proportional to 266,790.40, 400,070.40 and 133,619.20 is: 200,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,790.40 : 400,070.40 = 133,619.20 : x
  2. Step 2: Convert to fraction form
    266,790.40/400,070.40 = 133,619.20/x
  3. Step 3: Cross multiply
    266,790.40x = 400,070.40 × 133,619.20
  4. Step 4: Simplify right side
    266,790.40x = 53,457,086,791.68
  5. Step 5: Solve for x
    x = 53,457,086,791.68/266,790.40
  6. Step 6: Final answer
    x = 200,371.10

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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.