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Finding the Fourth Proportional to 328,550.42, 492,750.30 and 91,909.82

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Solution

The fourth proportional to 328,550.42, 492,750.30 and 91,909.82 is: 137,843.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,550.42 : 492,750.30 = 91,909.82 : x
  2. Step 2: Convert to fraction form
    328,550.42/492,750.30 = 91,909.82/x
  3. Step 3: Cross multiply
    328,550.42x = 492,750.30 × 91,909.82
  4. Step 4: Simplify right side
    328,550.42x = 45,288,591,377.95
  5. Step 5: Solve for x
    x = 45,288,591,377.95/328,550.42
  6. Step 6: Final answer
    x = 137,843.66

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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.