Home / 278,160.43-383,910.54-163,439.05

Finding the Fourth Proportional to 278,160.43, 383,910.54 and 163,439.05

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Solution

The fourth proportional to 278,160.43, 383,910.54 and 163,439.05 is: 225,574.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,160.43 : 383,910.54 = 163,439.05 : x
  2. Step 2: Convert to fraction form
    278,160.43/383,910.54 = 163,439.05/x
  3. Step 3: Cross multiply
    278,160.43x = 383,910.54 × 163,439.05
  4. Step 4: Simplify right side
    278,160.43x = 62,745,972,982.81
  5. Step 5: Solve for x
    x = 62,745,972,982.81/278,160.43
  6. Step 6: Final answer
    x = 225,574.76

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1.5x scale

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.