Home / 215,358.83-320,828.22-205,643.43

Finding the Fourth Proportional to 215,358.83, 320,828.22 and 205,643.43

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Solution

The fourth proportional to 215,358.83, 320,828.22 and 205,643.43 is: 306,354.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,358.83 : 320,828.22 = 205,643.43 : x
  2. Step 2: Convert to fraction form
    215,358.83/320,828.22 = 205,643.43/x
  3. Step 3: Cross multiply
    215,358.83x = 320,828.22 × 205,643.43
  4. Step 4: Simplify right side
    215,358.83x = 65,976,215,601.59
  5. Step 5: Solve for x
    x = 65,976,215,601.59/215,358.83
  6. Step 6: Final answer
    x = 306,354.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.