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Finding the Fourth Proportional to 312,500.89, 468,751.56 and 75,843.79

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Solution

The fourth proportional to 312,500.89, 468,751.56 and 75,843.79 is: 113,765.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,500.89 : 468,751.56 = 75,843.79 : x
  2. Step 2: Convert to fraction form
    312,500.89/468,751.56 = 75,843.79/x
  3. Step 3: Cross multiply
    312,500.89x = 468,751.56 × 75,843.79
  4. Step 4: Simplify right side
    312,500.89x = 35,551,896,059.25
  5. Step 5: Solve for x
    x = 35,551,896,059.25/312,500.89
  6. Step 6: Final answer
    x = 113,765.74

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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.