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Finding the Fourth Proportional to 208,391.94, 312,580.62 and 88,371.66

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Solution

The fourth proportional to 208,391.94, 312,580.62 and 88,371.66 is: 132,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,391.94 : 312,580.62 = 88,371.66 : x
  2. Step 2: Convert to fraction form
    208,391.94/312,580.62 = 88,371.66/x
  3. Step 3: Cross multiply
    208,391.94x = 312,580.62 × 88,371.66
  4. Step 4: Simplify right side
    208,391.94x = 27,623,267,687.14
  5. Step 5: Solve for x
    x = 27,623,267,687.14/208,391.94
  6. Step 6: Final answer
    x = 132,554.40

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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.