Home / 387,200.43-580,799.37-102,919.59

Finding the Fourth Proportional to 387,200.43, 580,799.37 and 102,919.59

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Solution

The fourth proportional to 387,200.43, 580,799.37 and 102,919.59 is: 154,379.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,200.43 : 580,799.37 = 102,919.59 : x
  2. Step 2: Convert to fraction form
    387,200.43/580,799.37 = 102,919.59/x
  3. Step 3: Cross multiply
    387,200.43x = 580,799.37 × 102,919.59
  4. Step 4: Simplify right side
    387,200.43x = 59,775,633,032.66
  5. Step 5: Solve for x
    x = 59,775,633,032.66/387,200.43
  6. Step 6: Final answer
    x = 154,379.05

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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.