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Finding the Fourth Proportional to 188,889.60, 282,678.30 and 173,143.20

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Solution

The fourth proportional to 188,889.60, 282,678.30 and 173,143.20 is: 259,113.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,889.60 : 282,678.30 = 173,143.20 : x
  2. Step 2: Convert to fraction form
    188,889.60/282,678.30 = 173,143.20/x
  3. Step 3: Cross multiply
    188,889.60x = 282,678.30 × 173,143.20
  4. Step 4: Simplify right side
    188,889.60x = 48,943,825,432.56
  5. Step 5: Solve for x
    x = 48,943,825,432.56/188,889.60
  6. Step 6: Final answer
    x = 259,113.39

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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.