Home / 392,733.71-541,979.75-218,320.33

Finding the Fourth Proportional to 392,733.71, 541,979.75 and 218,320.33

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Solution

The fourth proportional to 392,733.71, 541,979.75 and 218,320.33 is: 301,286.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,733.71 : 541,979.75 = 218,320.33 : x
  2. Step 2: Convert to fraction form
    392,733.71/541,979.75 = 218,320.33/x
  3. Step 3: Cross multiply
    392,733.71x = 541,979.75 × 218,320.33
  4. Step 4: Simplify right side
    392,733.71x = 118,325,194,071.82
  5. Step 5: Solve for x
    x = 118,325,194,071.82/392,733.71
  6. Step 6: Final answer
    x = 301,286.06

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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.