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Finding the Fourth Proportional to 266,066.12, 399,172.08 and 132,785.48

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Solution

The fourth proportional to 266,066.12, 399,172.08 and 132,785.48 is: 199,214.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,066.12 : 399,172.08 = 132,785.48 : x
  2. Step 2: Convert to fraction form
    266,066.12/399,172.08 = 132,785.48/x
  3. Step 3: Cross multiply
    266,066.12x = 399,172.08 × 132,785.48
  4. Step 4: Simplify right side
    266,066.12x = 53,004,256,245.40
  5. Step 5: Solve for x
    x = 53,004,256,245.40/266,066.12
  6. Step 6: Final answer
    x = 199,214.60

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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.