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Finding the Fourth Proportional to 291,274.26, 436,926.96 and 91,610.21

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Solution

The fourth proportional to 291,274.26, 436,926.96 and 91,610.21 is: 137,420.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,274.26 : 436,926.96 = 91,610.21 : x
  2. Step 2: Convert to fraction form
    291,274.26/436,926.96 = 91,610.21/x
  3. Step 3: Cross multiply
    291,274.26x = 436,926.96 × 91,610.21
  4. Step 4: Simplify right side
    291,274.26x = 40,026,970,102.21
  5. Step 5: Solve for x
    x = 40,026,970,102.21/291,274.26
  6. Step 6: Final answer
    x = 137,420.21

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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.