Home / 392,021.04-587,291.40-231,618.36

Finding the Fourth Proportional to 392,021.04, 587,291.40 and 231,618.36

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Solution

The fourth proportional to 392,021.04, 587,291.40 and 231,618.36 is: 346,990.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,021.04 : 587,291.40 = 231,618.36 : x
  2. Step 2: Convert to fraction form
    392,021.04/587,291.40 = 231,618.36/x
  3. Step 3: Cross multiply
    392,021.04x = 587,291.40 × 231,618.36
  4. Step 4: Simplify right side
    392,021.04x = 136,027,470,910.10
  5. Step 5: Solve for x
    x = 136,027,470,910.10/392,021.04
  6. Step 6: Final answer
    x = 346,990.23

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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.