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Finding the Fourth Proportional to 312,366.89, 468,550.32 and 75,709.56

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Solution

The fourth proportional to 312,366.89, 468,550.32 and 75,709.56 is: 113,564.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,366.89 : 468,550.32 = 75,709.56 : x
  2. Step 2: Convert to fraction form
    312,366.89/468,550.32 = 75,709.56/x
  3. Step 3: Cross multiply
    312,366.89x = 468,550.32 × 75,709.56
  4. Step 4: Simplify right side
    312,366.89x = 35,473,738,565.06
  5. Step 5: Solve for x
    x = 35,473,738,565.06/312,366.89
  6. Step 6: Final answer
    x = 113,564.34

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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.