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Finding the Fourth Proportional to 319,381.00, 478,932.41 and 91,626.36

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Solution

The fourth proportional to 319,381.00, 478,932.41 and 91,626.36 is: 137,399.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,381.00 : 478,932.41 = 91,626.36 : x
  2. Step 2: Convert to fraction form
    319,381.00/478,932.41 = 91,626.36/x
  3. Step 3: Cross multiply
    319,381.00x = 478,932.41 × 91,626.36
  4. Step 4: Simplify right side
    319,381.00x = 43,882,833,414.33
  5. Step 5: Solve for x
    x = 43,882,833,414.33/319,381.00
  6. Step 6: Final answer
    x = 137,399.64

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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.