Home / 810,278.91-1,215,418.91-211,238.55

Finding the Fourth Proportional to 810,278.91, 1,215,418.91 and 211,238.55

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Solution

The fourth proportional to 810,278.91, 1,215,418.91 and 211,238.55 is: 316,857.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,278.91 : 1,215,418.91 = 211,238.55 : x
  2. Step 2: Convert to fraction form
    810,278.91/1,215,418.91 = 211,238.55/x
  3. Step 3: Cross multiply
    810,278.91x = 1,215,418.91 × 211,238.55
  4. Step 4: Simplify right side
    810,278.91x = 256,743,327,134.79
  5. Step 5: Solve for x
    x = 256,743,327,134.79/810,278.91
  6. Step 6: Final answer
    x = 316,857.97

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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.