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Finding the Fourth Proportional to 208,081.98, 312,115.68 and 58,321.08

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Solution

The fourth proportional to 208,081.98, 312,115.68 and 58,321.08 is: 87,479.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,081.98 : 312,115.68 = 58,321.08 : x
  2. Step 2: Convert to fraction form
    208,081.98/312,115.68 = 58,321.08/x
  3. Step 3: Cross multiply
    208,081.98x = 312,115.68 × 58,321.08
  4. Step 4: Simplify right side
    208,081.98x = 18,202,923,542.53
  5. Step 5: Solve for x
    x = 18,202,923,542.53/208,081.98
  6. Step 6: Final answer
    x = 87,479.58

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1.5x scale

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.