Home / 278,721.39-384,269.52-201,131.92

Finding the Fourth Proportional to 278,721.39, 384,269.52 and 201,131.92

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Solution

The fourth proportional to 278,721.39, 384,269.52 and 201,131.92 is: 277,297.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,721.39 : 384,269.52 = 201,131.92 : x
  2. Step 2: Convert to fraction form
    278,721.39/384,269.52 = 201,131.92/x
  3. Step 3: Cross multiply
    278,721.39x = 384,269.52 × 201,131.92
  4. Step 4: Simplify right side
    278,721.39x = 77,288,866,355.08
  5. Step 5: Solve for x
    x = 77,288,866,355.08/278,721.39
  6. Step 6: Final answer
    x = 277,297.94

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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.