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Finding the Fourth Proportional to 208,395.36, 312,584.30 and 88,419.38

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Solution

The fourth proportional to 208,395.36, 312,584.30 and 88,419.38 is: 132,625.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,395.36 : 312,584.30 = 88,419.38 : x
  2. Step 2: Convert to fraction form
    208,395.36/312,584.30 = 88,419.38/x
  3. Step 3: Cross multiply
    208,395.36x = 312,584.30 × 88,419.38
  4. Step 4: Simplify right side
    208,395.36x = 27,638,510,003.73
  5. Step 5: Solve for x
    x = 27,638,510,003.73/208,395.36
  6. Step 6: Final answer
    x = 132,625.36

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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.