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Finding the Fourth Proportional to 228,662.43, 342,619.46 and 138,431.65

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Solution

The fourth proportional to 228,662.43, 342,619.46 and 138,431.65 is: 207,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,662.43 : 342,619.46 = 138,431.65 : x
  2. Step 2: Convert to fraction form
    228,662.43/342,619.46 = 138,431.65/x
  3. Step 3: Cross multiply
    228,662.43x = 342,619.46 × 138,431.65
  4. Step 4: Simplify right side
    228,662.43x = 47,429,378,186.79
  5. Step 5: Solve for x
    x = 47,429,378,186.79/228,662.43
  6. Step 6: Final answer
    x = 207,420.95

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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.