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Finding the Fourth Proportional to 266,911.36, 399,952.32 and 168,208

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Solution

The fourth proportional to 266,911.36, 399,952.32 and 168,208 is: 252,050.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,911.36 : 399,952.32 = 168,208 : x
  2. Step 2: Convert to fraction form
    266,911.36/399,952.32 = 168,208/x
  3. Step 3: Cross multiply
    266,911.36x = 399,952.32 × 168,208
  4. Step 4: Simplify right side
    266,911.36x = 67,275,179,842.56
  5. Step 5: Solve for x
    x = 67,275,179,842.56/266,911.36
  6. Step 6: Final answer
    x = 252,050.64

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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.