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Finding the Fourth Proportional to 403,489.80, 605,314.44 and 119,185.29

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Solution

The fourth proportional to 403,489.80, 605,314.44 and 119,185.29 is: 178,801.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,489.80 : 605,314.44 = 119,185.29 : x
  2. Step 2: Convert to fraction form
    403,489.80/605,314.44 = 119,185.29/x
  3. Step 3: Cross multiply
    403,489.80x = 605,314.44 × 119,185.29
  4. Step 4: Simplify right side
    403,489.80x = 72,144,577,072.59
  5. Step 5: Solve for x
    x = 72,144,577,072.59/403,489.80
  6. Step 6: Final answer
    x = 178,801.49

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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.