Home / 309,631.40-427,295.76-231,969.44

Finding the Fourth Proportional to 309,631.40, 427,295.76 and 231,969.44

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Solution

The fourth proportional to 309,631.40, 427,295.76 and 231,969.44 is: 320,121.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,631.40 : 427,295.76 = 231,969.44 : x
  2. Step 2: Convert to fraction form
    309,631.40/427,295.76 = 231,969.44/x
  3. Step 3: Cross multiply
    309,631.40x = 427,295.76 × 231,969.44
  4. Step 4: Simplify right side
    309,631.40x = 99,119,558,161.57
  5. Step 5: Solve for x
    x = 99,119,558,161.57/309,631.40
  6. Step 6: Final answer
    x = 320,121.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.