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Finding the Fourth Proportional to 208,638.25, 312,958.08 and 58,879.37

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Solution

The fourth proportional to 208,638.25, 312,958.08 and 58,879.37 is: 88,319.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,638.25 : 312,958.08 = 58,879.37 : x
  2. Step 2: Convert to fraction form
    208,638.25/312,958.08 = 58,879.37/x
  3. Step 3: Cross multiply
    208,638.25x = 312,958.08 × 58,879.37
  4. Step 4: Simplify right side
    208,638.25x = 18,426,775,369.20
  5. Step 5: Solve for x
    x = 18,426,775,369.20/208,638.25
  6. Step 6: Final answer
    x = 88,319.26

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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.