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Finding the Fourth Proportional to 339,061.60, 509,175.60 and 221,255.20

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Solution

The fourth proportional to 339,061.60, 509,175.60 and 221,255.20 is: 332,263.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,061.60 : 509,175.60 = 221,255.20 : x
  2. Step 2: Convert to fraction form
    339,061.60/509,175.60 = 221,255.20/x
  3. Step 3: Cross multiply
    339,061.60x = 509,175.60 × 221,255.20
  4. Step 4: Simplify right side
    339,061.60x = 112,657,749,213.12
  5. Step 5: Solve for x
    x = 112,657,749,213.12/339,061.60
  6. Step 6: Final answer
    x = 332,263.37

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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.