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Finding the Fourth Proportional to 259,250.40, 388,568.40 and 109,490.40

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Solution

The fourth proportional to 259,250.40, 388,568.40 and 109,490.40 is: 164,105.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,250.40 : 388,568.40 = 109,490.40 : x
  2. Step 2: Convert to fraction form
    259,250.40/388,568.40 = 109,490.40/x
  3. Step 3: Cross multiply
    259,250.40x = 388,568.40 × 109,490.40
  4. Step 4: Simplify right side
    259,250.40x = 42,544,509,543.36
  5. Step 5: Solve for x
    x = 42,544,509,543.36/259,250.40
  6. Step 6: Final answer
    x = 164,105.86

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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.