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Finding the Fourth Proportional to 259,500.60, 388,386.90 and 188,220.60

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Solution

The fourth proportional to 259,500.60, 388,386.90 and 188,220.60 is: 281,704.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,500.60 : 388,386.90 = 188,220.60 : x
  2. Step 2: Convert to fraction form
    259,500.60/388,386.90 = 188,220.60/x
  3. Step 3: Cross multiply
    259,500.60x = 388,386.90 × 188,220.60
  4. Step 4: Simplify right side
    259,500.60x = 73,102,415,350.14
  5. Step 5: Solve for x
    x = 73,102,415,350.14/259,500.60
  6. Step 6: Final answer
    x = 281,704.22

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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.