Home / 387,200.75-579,557.37-206,835.22

Finding the Fourth Proportional to 387,200.75, 579,557.37 and 206,835.22

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Solution

The fourth proportional to 387,200.75, 579,557.37 and 206,835.22 is: 309,588.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,200.75 : 579,557.37 = 206,835.22 : x
  2. Step 2: Convert to fraction form
    387,200.75/579,557.37 = 206,835.22/x
  3. Step 3: Cross multiply
    387,200.75x = 579,557.37 × 206,835.22
  4. Step 4: Simplify right side
    387,200.75x = 119,872,873,228.79
  5. Step 5: Solve for x
    x = 119,872,873,228.79/387,200.75
  6. Step 6: Final answer
    x = 309,588.43

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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.