Home / 394,288.86-543,552.08-280,914.78

Finding the Fourth Proportional to 394,288.86, 543,552.08 and 280,914.78

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Solution

The fourth proportional to 394,288.86, 543,552.08 and 280,914.78 is: 387,258.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,288.86 : 543,552.08 = 280,914.78 : x
  2. Step 2: Convert to fraction form
    394,288.86/543,552.08 = 280,914.78/x
  3. Step 3: Cross multiply
    394,288.86x = 543,552.08 × 280,914.78
  4. Step 4: Simplify right side
    394,288.86x = 152,691,812,971.74
  5. Step 5: Solve for x
    x = 152,691,812,971.74/394,288.86
  6. Step 6: Final answer
    x = 387,258.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.