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Finding the Fourth Proportional to 291,735.90, 437,636.67 and 91,997.19

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Solution

The fourth proportional to 291,735.90, 437,636.67 and 91,997.19 is: 138,006.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,735.90 : 437,636.67 = 91,997.19 : x
  2. Step 2: Convert to fraction form
    291,735.90/437,636.67 = 91,997.19/x
  3. Step 3: Cross multiply
    291,735.90x = 437,636.67 × 91,997.19
  4. Step 4: Simplify right side
    291,735.90x = 40,261,343,880.96
  5. Step 5: Solve for x
    x = 40,261,343,880.96/291,735.90
  6. Step 6: Final answer
    x = 138,006.13

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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.