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Finding the Fourth Proportional to 225,862.56, 338,795.28 and 68,090.40

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Solution

The fourth proportional to 225,862.56, 338,795.28 and 68,090.40 is: 102,136.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,862.56 : 338,795.28 = 68,090.40 : x
  2. Step 2: Convert to fraction form
    225,862.56/338,795.28 = 68,090.40/x
  3. Step 3: Cross multiply
    225,862.56x = 338,795.28 × 68,090.40
  4. Step 4: Simplify right side
    225,862.56x = 23,068,706,133.31
  5. Step 5: Solve for x
    x = 23,068,706,133.31/225,862.56
  6. Step 6: Final answer
    x = 102,136.03

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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.