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Finding the Fourth Proportional to 259,389.40, 388,868.10 and 109,744.60

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Solution

The fourth proportional to 259,389.40, 388,868.10 and 109,744.60 is: 164,525.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,389.40 : 388,868.10 = 109,744.60 : x
  2. Step 2: Convert to fraction form
    259,389.40/388,868.10 = 109,744.60/x
  3. Step 3: Cross multiply
    259,389.40x = 388,868.10 × 109,744.60
  4. Step 4: Simplify right side
    259,389.40x = 42,676,174,087.26
  5. Step 5: Solve for x
    x = 42,676,174,087.26/259,389.40
  6. Step 6: Final answer
    x = 164,525.51

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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.