Home / 386,789.75-580,199.21-120,549.23

Finding the Fourth Proportional to 386,789.75, 580,199.21 and 120,549.23

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Solution

The fourth proportional to 386,789.75, 580,199.21 and 120,549.23 is: 180,828.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,789.75 : 580,199.21 = 120,549.23 : x
  2. Step 2: Convert to fraction form
    386,789.75/580,199.21 = 120,549.23/x
  3. Step 3: Cross multiply
    386,789.75x = 580,199.21 × 120,549.23
  4. Step 4: Simplify right side
    386,789.75x = 69,942,567,409.36
  5. Step 5: Solve for x
    x = 69,942,567,409.36/386,789.75
  6. Step 6: Final answer
    x = 180,828.39

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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.