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Finding the Fourth Proportional to 221,431.70, 331,807.35 and 165,007.10

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Solution

The fourth proportional to 221,431.70, 331,807.35 and 165,007.10 is: 247,257.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,431.70 : 331,807.35 = 165,007.10 : x
  2. Step 2: Convert to fraction form
    221,431.70/331,807.35 = 165,007.10/x
  3. Step 3: Cross multiply
    221,431.70x = 331,807.35 × 165,007.10
  4. Step 4: Simplify right side
    221,431.70x = 54,750,568,582.19
  5. Step 5: Solve for x
    x = 54,750,568,582.19/221,431.70
  6. Step 6: Final answer
    x = 247,257.14

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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.