Home / 387,087.56-580,633.29-120,825.75

Finding the Fourth Proportional to 387,087.56, 580,633.29 and 120,825.75

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Solution

The fourth proportional to 387,087.56, 580,633.29 and 120,825.75 is: 181,239.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,087.56 : 580,633.29 = 120,825.75 : x
  2. Step 2: Convert to fraction form
    387,087.56/580,633.29 = 120,825.75/x
  3. Step 3: Cross multiply
    387,087.56x = 580,633.29 × 120,825.75
  4. Step 4: Simplify right side
    387,087.56x = 70,155,452,739.22
  5. Step 5: Solve for x
    x = 70,155,452,739.22/387,087.56
  6. Step 6: Final answer
    x = 181,239.24

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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.