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Finding the Fourth Proportional to 266,447.12, 367,697.12 and 143,939.52

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Solution

The fourth proportional to 266,447.12, 367,697.12 and 143,939.52 is: 198,636.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,447.12 : 367,697.12 = 143,939.52 : x
  2. Step 2: Convert to fraction form
    266,447.12/367,697.12 = 143,939.52/x
  3. Step 3: Cross multiply
    266,447.12x = 367,697.12 × 143,939.52
  4. Step 4: Simplify right side
    266,447.12x = 52,926,146,238.48
  5. Step 5: Solve for x
    x = 52,926,146,238.48/266,447.12
  6. Step 6: Final answer
    x = 198,636.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.