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Finding the Fourth Proportional to 368,443.27, 552,716.80 and 128,522.18

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Solution

The fourth proportional to 368,443.27, 552,716.80 and 128,522.18 is: 192,801.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,443.27 : 552,716.80 = 128,522.18 : x
  2. Step 2: Convert to fraction form
    368,443.27/552,716.80 = 128,522.18/x
  3. Step 3: Cross multiply
    368,443.27x = 552,716.80 × 128,522.18
  4. Step 4: Simplify right side
    368,443.27x = 71,036,365,295.04
  5. Step 5: Solve for x
    x = 71,036,365,295.04/368,443.27
  6. Step 6: Final answer
    x = 192,801.37

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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.