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Finding the Fourth Proportional to 261,891.01, 361,453.08 and 154,487.44

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Solution

The fourth proportional to 261,891.01, 361,453.08 and 154,487.44 is: 213,218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,891.01 : 361,453.08 = 154,487.44 : x
  2. Step 2: Convert to fraction form
    261,891.01/361,453.08 = 154,487.44/x
  3. Step 3: Cross multiply
    261,891.01x = 361,453.08 × 154,487.44
  4. Step 4: Simplify right side
    261,891.01x = 55,839,961,009.32
  5. Step 5: Solve for x
    x = 55,839,961,009.32/261,891.01
  6. Step 6: Final answer
    x = 213,218.32

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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.