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Finding the Fourth Proportional to 259,835.60, 388,889.40 and 188,555.60

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Solution

The fourth proportional to 259,835.60, 388,889.40 and 188,555.60 is: 282,206.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,835.60 : 388,889.40 = 188,555.60 : x
  2. Step 2: Convert to fraction form
    259,835.60/388,889.40 = 188,555.60/x
  3. Step 3: Cross multiply
    259,835.60x = 388,889.40 × 188,555.60
  4. Step 4: Simplify right side
    259,835.60x = 73,327,274,150.64
  5. Step 5: Solve for x
    x = 73,327,274,150.64/259,835.60
  6. Step 6: Final answer
    x = 282,206.42

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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.