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Finding the Fourth Proportional to 208,276.67, 312,350.36 and 75,139.58

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Solution

The fourth proportional to 208,276.67, 312,350.36 and 75,139.58 is: 112,686.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,276.67 : 312,350.36 = 75,139.58 : x
  2. Step 2: Convert to fraction form
    208,276.67/312,350.36 = 75,139.58/x
  3. Step 3: Cross multiply
    208,276.67x = 312,350.36 × 75,139.58
  4. Step 4: Simplify right side
    208,276.67x = 23,469,874,863.25
  5. Step 5: Solve for x
    x = 23,469,874,863.25/208,276.67
  6. Step 6: Final answer
    x = 112,686.05

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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.