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Finding the Fourth Proportional to 266,634.52, 399,939.12 and 66,950.48

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Solution

The fourth proportional to 266,634.52, 399,939.12 and 66,950.48 is: 100,422.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,634.52 : 399,939.12 = 66,950.48 : x
  2. Step 2: Convert to fraction form
    266,634.52/399,939.12 = 66,950.48/x
  3. Step 3: Cross multiply
    266,634.52x = 399,939.12 × 66,950.48
  4. Step 4: Simplify right side
    266,634.52x = 26,776,117,054.63
  5. Step 5: Solve for x
    x = 26,776,117,054.63/266,634.52
  6. Step 6: Final answer
    x = 100,422.55

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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.