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Finding the Fourth Proportional to 347,689.20, 521,922.60 and 269,151.60

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Solution

The fourth proportional to 347,689.20, 521,922.60 and 269,151.60 is: 404,028.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,689.20 : 521,922.60 = 269,151.60 : x
  2. Step 2: Convert to fraction form
    347,689.20/521,922.60 = 269,151.60/x
  3. Step 3: Cross multiply
    347,689.20x = 521,922.60 × 269,151.60
  4. Step 4: Simplify right side
    347,689.20x = 140,476,302,866.16
  5. Step 5: Solve for x
    x = 140,476,302,866.16/347,689.20
  6. Step 6: Final answer
    x = 404,028.38

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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.