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Finding the Fourth Proportional to 479,634.30, 661,907.36 and 272,891.29

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Solution

The fourth proportional to 479,634.30, 661,907.36 and 272,891.29 is: 376,596.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,634.30 : 661,907.36 = 272,891.29 : x
  2. Step 2: Convert to fraction form
    479,634.30/661,907.36 = 272,891.29/x
  3. Step 3: Cross multiply
    479,634.30x = 661,907.36 × 272,891.29
  4. Step 4: Simplify right side
    479,634.30x = 180,628,753,330.89
  5. Step 5: Solve for x
    x = 180,628,753,330.89/479,634.30
  6. Step 6: Final answer
    x = 376,596.82

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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.