Home / 387,282.70-580,749.09-137,971.18

Finding the Fourth Proportional to 387,282.70, 580,749.09 and 137,971.18

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Solution

The fourth proportional to 387,282.70, 580,749.09 and 137,971.18 is: 206,894.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,282.70 : 580,749.09 = 137,971.18 : x
  2. Step 2: Convert to fraction form
    387,282.70/580,749.09 = 137,971.18/x
  3. Step 3: Cross multiply
    387,282.70x = 580,749.09 × 137,971.18
  4. Step 4: Simplify right side
    387,282.70x = 80,126,637,231.23
  5. Step 5: Solve for x
    x = 80,126,637,231.23/387,282.70
  6. Step 6: Final answer
    x = 206,894.44

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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.