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Finding the Fourth Proportional to 210,687.62, 316,028.25 and 68,539.37

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Solution

The fourth proportional to 210,687.62, 316,028.25 and 68,539.37 is: 102,808.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,687.62 : 316,028.25 = 68,539.37 : x
  2. Step 2: Convert to fraction form
    210,687.62/316,028.25 = 68,539.37/x
  3. Step 3: Cross multiply
    210,687.62x = 316,028.25 × 68,539.37
  4. Step 4: Simplify right side
    210,687.62x = 21,660,375,577.06
  5. Step 5: Solve for x
    x = 21,660,375,577.06/210,687.62
  6. Step 6: Final answer
    x = 102,808.02

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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.