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Finding the Fourth Proportional to 291,708.26, 437,636.17 and 81,346.22

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Solution

The fourth proportional to 291,708.26, 437,636.17 and 81,346.22 is: 122,039.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,708.26 : 437,636.17 = 81,346.22 : x
  2. Step 2: Convert to fraction form
    291,708.26/437,636.17 = 81,346.22/x
  3. Step 3: Cross multiply
    291,708.26x = 437,636.17 × 81,346.22
  4. Step 4: Simplify right side
    291,708.26x = 35,600,048,164.78
  5. Step 5: Solve for x
    x = 35,600,048,164.78/291,708.26
  6. Step 6: Final answer
    x = 122,039.90

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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.