Home / 391,918.86-587,976.96-111,436.10

Finding the Fourth Proportional to 391,918.86, 587,976.96 and 111,436.10

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Solution

The fourth proportional to 391,918.86, 587,976.96 and 111,436.10 is: 167,182.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,918.86 : 587,976.96 = 111,436.10 : x
  2. Step 2: Convert to fraction form
    391,918.86/587,976.96 = 111,436.10/x
  3. Step 3: Cross multiply
    391,918.86x = 587,976.96 × 111,436.10
  4. Step 4: Simplify right side
    391,918.86x = 65,521,859,312.26
  5. Step 5: Solve for x
    x = 65,521,859,312.26/391,918.86
  6. Step 6: Final answer
    x = 167,182.21

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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.