Home / 288,026.20-431,456.10-163,221.40

Finding the Fourth Proportional to 288,026.20, 431,456.10 and 163,221.40

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Solution

The fourth proportional to 288,026.20, 431,456.10 and 163,221.40 is: 244,501.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,026.20 : 431,456.10 = 163,221.40 : x
  2. Step 2: Convert to fraction form
    288,026.20/431,456.10 = 163,221.40/x
  3. Step 3: Cross multiply
    288,026.20x = 431,456.10 × 163,221.40
  4. Step 4: Simplify right side
    288,026.20x = 70,422,868,680.54
  5. Step 5: Solve for x
    x = 70,422,868,680.54/288,026.20
  6. Step 6: Final answer
    x = 244,501.61

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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.