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Finding the Fourth Proportional to 328,173.73, 492,343.61 and 91,516.44

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Solution

The fourth proportional to 328,173.73, 492,343.61 and 91,516.44 is: 137,297.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,173.73 : 492,343.61 = 91,516.44 : x
  2. Step 2: Convert to fraction form
    328,173.73/492,343.61 = 91,516.44/x
  3. Step 3: Cross multiply
    328,173.73x = 492,343.61 × 91,516.44
  4. Step 4: Simplify right side
    328,173.73x = 45,057,534,443.95
  5. Step 5: Solve for x
    x = 45,057,534,443.95/328,173.73
  6. Step 6: Final answer
    x = 137,297.81

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1.5x scale

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.