Home / 387,519.14-580,965.03-121,142.54

Finding the Fourth Proportional to 387,519.14, 580,965.03 and 121,142.54

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Solution

The fourth proportional to 387,519.14, 580,965.03 and 121,142.54 is: 181,615.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,519.14 : 580,965.03 = 121,142.54 : x
  2. Step 2: Convert to fraction form
    387,519.14/580,965.03 = 121,142.54/x
  3. Step 3: Cross multiply
    387,519.14x = 580,965.03 × 121,142.54
  4. Step 4: Simplify right side
    387,519.14x = 70,379,576,480.55
  5. Step 5: Solve for x
    x = 70,379,576,480.55/387,519.14
  6. Step 6: Final answer
    x = 181,615.75

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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.