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Finding the Fourth Proportional to 259,409.40, 388,898.10 and 109,764.60

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Solution

The fourth proportional to 259,409.40, 388,898.10 and 109,764.60 is: 164,555.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,409.40 : 388,898.10 = 109,764.60 : x
  2. Step 2: Convert to fraction form
    259,409.40/388,898.10 = 109,764.60/x
  3. Step 3: Cross multiply
    259,409.40x = 388,898.10 × 109,764.60
  4. Step 4: Simplify right side
    259,409.40x = 42,687,244,387.26
  5. Step 5: Solve for x
    x = 42,687,244,387.26/259,409.40
  6. Step 6: Final answer
    x = 164,555.50

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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.