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Finding the Fourth Proportional to 328,144.82, 492,244.98 and 91,487.70

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Solution

The fourth proportional to 328,144.82, 492,244.98 and 91,487.70 is: 137,239.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,144.82 : 492,244.98 = 91,487.70 : x
  2. Step 2: Convert to fraction form
    328,144.82/492,244.98 = 91,487.70/x
  3. Step 3: Cross multiply
    328,144.82x = 492,244.98 × 91,487.70
  4. Step 4: Simplify right side
    328,144.82x = 45,034,361,056.75
  5. Step 5: Solve for x
    x = 45,034,361,056.75/328,144.82
  6. Step 6: Final answer
    x = 137,239.29

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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.