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Finding the Fourth Proportional to 291,736.60, 437,566 and 81,356.92

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Solution

The fourth proportional to 291,736.60, 437,566 and 81,356.92 is: 122,024.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,736.60 : 437,566 = 81,356.92 : x
  2. Step 2: Convert to fraction form
    291,736.60/437,566 = 81,356.92/x
  3. Step 3: Cross multiply
    291,736.60x = 437,566 × 81,356.92
  4. Step 4: Simplify right side
    291,736.60x = 35,599,022,056.72
  5. Step 5: Solve for x
    x = 35,599,022,056.72/291,736.60
  6. Step 6: Final answer
    x = 122,024.53

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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.