Home / 278,634.20-384,508.69-163,920.23

Finding the Fourth Proportional to 278,634.20, 384,508.69 and 163,920.23

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Solution

The fourth proportional to 278,634.20, 384,508.69 and 163,920.23 is: 226,206.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,634.20 : 384,508.69 = 163,920.23 : x
  2. Step 2: Convert to fraction form
    278,634.20/384,508.69 = 163,920.23/x
  3. Step 3: Cross multiply
    278,634.20x = 384,508.69 × 163,920.23
  4. Step 4: Simplify right side
    278,634.20x = 63,028,752,901.80
  5. Step 5: Solve for x
    x = 63,028,752,901.80/278,634.20
  6. Step 6: Final answer
    x = 226,206.09

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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.