Home / 387,687.36-582,195.33-210,540.36

Finding the Fourth Proportional to 387,687.36, 582,195.33 and 210,540.36

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Solution

The fourth proportional to 387,687.36, 582,195.33 and 210,540.36 is: 316,171.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,687.36 : 582,195.33 = 210,540.36 : x
  2. Step 2: Convert to fraction form
    387,687.36/582,195.33 = 210,540.36/x
  3. Step 3: Cross multiply
    387,687.36x = 582,195.33 × 210,540.36
  4. Step 4: Simplify right side
    387,687.36x = 122,575,614,368.52
  5. Step 5: Solve for x
    x = 122,575,614,368.52/387,687.36
  6. Step 6: Final answer
    x = 316,171.29

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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.