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Finding the Fourth Proportional to 291,241.20, 436,516.20 and 122,761.20

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Solution

The fourth proportional to 291,241.20, 436,516.20 and 122,761.20 is: 183,996.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,241.20 : 436,516.20 = 122,761.20 : x
  2. Step 2: Convert to fraction form
    291,241.20/436,516.20 = 122,761.20/x
  3. Step 3: Cross multiply
    291,241.20x = 436,516.20 × 122,761.20
  4. Step 4: Simplify right side
    291,241.20x = 53,587,252,531.44
  5. Step 5: Solve for x
    x = 53,587,252,531.44/291,241.20
  6. Step 6: Final answer
    x = 183,996.13

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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.