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Finding the Fourth Proportional to 291,172.26, 436,758.26 and 80,810.13

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Solution

The fourth proportional to 291,172.26, 436,758.26 and 80,810.13 is: 121,215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,172.26 : 436,758.26 = 80,810.13 : x
  2. Step 2: Convert to fraction form
    291,172.26/436,758.26 = 80,810.13/x
  3. Step 3: Cross multiply
    291,172.26x = 436,758.26 × 80,810.13
  4. Step 4: Simplify right side
    291,172.26x = 35,294,491,365.12
  5. Step 5: Solve for x
    x = 35,294,491,365.12/291,172.26
  6. Step 6: Final answer
    x = 121,215.16

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1.5x scale

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.