Home / 392,986.54-542,324.42-218,559.18

Finding the Fourth Proportional to 392,986.54, 542,324.42 and 218,559.18

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Solution

The fourth proportional to 392,986.54, 542,324.42 and 218,559.18 is: 301,613.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,986.54 : 542,324.42 = 218,559.18 : x
  2. Step 2: Convert to fraction form
    392,986.54/542,324.42 = 218,559.18/x
  3. Step 3: Cross multiply
    392,986.54x = 542,324.42 × 218,559.18
  4. Step 4: Simplify right side
    392,986.54x = 118,529,980,529.18
  5. Step 5: Solve for x
    x = 118,529,980,529.18/392,986.54
  6. Step 6: Final answer
    x = 301,613.33

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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.