Home / 391,986.93-587,979.24-107,677.77

Finding the Fourth Proportional to 391,986.93, 587,979.24 and 107,677.77

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Solution

The fourth proportional to 391,986.93, 587,979.24 and 107,677.77 is: 161,516.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,986.93 : 587,979.24 = 107,677.77 : x
  2. Step 2: Convert to fraction form
    391,986.93/587,979.24 = 107,677.77/x
  3. Step 3: Cross multiply
    391,986.93x = 587,979.24 × 107,677.77
  4. Step 4: Simplify right side
    391,986.93x = 63,312,293,369.49
  5. Step 5: Solve for x
    x = 63,312,293,369.49/391,986.93
  6. Step 6: Final answer
    x = 161,516.34

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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.