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Finding the Fourth Proportional to 328,228.86, 492,426.33 and 91,571.37

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Solution

The fourth proportional to 328,228.86, 492,426.33 and 91,571.37 is: 137,380.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,228.86 : 492,426.33 = 91,571.37 : x
  2. Step 2: Convert to fraction form
    328,228.86/492,426.33 = 91,571.37/x
  3. Step 3: Cross multiply
    328,228.86x = 492,426.33 × 91,571.37
  4. Step 4: Simplify right side
    328,228.86x = 45,092,153,662.17
  5. Step 5: Solve for x
    x = 45,092,153,662.17/328,228.86
  6. Step 6: Final answer
    x = 137,380.22

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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.