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Finding the Fourth Proportional to 291,628.70, 437,443.06 and 91,969.27

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Solution

The fourth proportional to 291,628.70, 437,443.06 and 91,969.27 is: 137,953.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,628.70 : 437,443.06 = 91,969.27 : x
  2. Step 2: Convert to fraction form
    291,628.70/437,443.06 = 91,969.27/x
  3. Step 3: Cross multiply
    291,628.70x = 437,443.06 × 91,969.27
  4. Step 4: Simplify right side
    291,628.70x = 40,231,317,571.24
  5. Step 5: Solve for x
    x = 40,231,317,571.24/291,628.70
  6. Step 6: Final answer
    x = 137,953.90

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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.