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Finding the Fourth Proportional to 208,636.67, 312,816.75 and 75,499.61

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Solution

The fourth proportional to 208,636.67, 312,816.75 and 75,499.61 is: 113,199.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,636.67 : 312,816.75 = 75,499.61 : x
  2. Step 2: Convert to fraction form
    208,636.67/312,816.75 = 75,499.61/x
  3. Step 3: Cross multiply
    208,636.67x = 312,816.75 × 75,499.61
  4. Step 4: Simplify right side
    208,636.67x = 23,617,542,626.47
  5. Step 5: Solve for x
    x = 23,617,542,626.47/208,636.67
  6. Step 6: Final answer
    x = 113,199.38

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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.