Home / 386,784.36-580,175.73-218,228.22

Finding the Fourth Proportional to 386,784.36, 580,175.73 and 218,228.22

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Solution

The fourth proportional to 386,784.36, 580,175.73 and 218,228.22 is: 327,341.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,784.36 : 580,175.73 = 218,228.22 : x
  2. Step 2: Convert to fraction form
    386,784.36/580,175.73 = 218,228.22/x
  3. Step 3: Cross multiply
    386,784.36x = 580,175.73 × 218,228.22
  4. Step 4: Simplify right side
    386,784.36x = 126,610,716,845.10
  5. Step 5: Solve for x
    x = 126,610,716,845.10/386,784.36
  6. Step 6: Final answer
    x = 327,341.87

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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.