Home / 810,389.16-1,215,584.28-211,348.80

Finding the Fourth Proportional to 810,389.16, 1,215,584.28 and 211,348.80

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Solution

The fourth proportional to 810,389.16, 1,215,584.28 and 211,348.80 is: 317,023.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,389.16 : 1,215,584.28 = 211,348.80 : x
  2. Step 2: Convert to fraction form
    810,389.16/1,215,584.28 = 211,348.80/x
  3. Step 3: Cross multiply
    810,389.16x = 1,215,584.28 × 211,348.80
  4. Step 4: Simplify right side
    810,389.16x = 256,912,278,876.86
  5. Step 5: Solve for x
    x = 256,912,278,876.86/810,389.16
  6. Step 6: Final answer
    x = 317,023.34

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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.