Home / 391,176.21-586,855.85-121,290.15

Finding the Fourth Proportional to 391,176.21, 586,855.85 and 121,290.15

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Solution

The fourth proportional to 391,176.21, 586,855.85 and 121,290.15 is: 181,963.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,176.21 : 586,855.85 = 121,290.15 : x
  2. Step 2: Convert to fraction form
    391,176.21/586,855.85 = 121,290.15/x
  3. Step 3: Cross multiply
    391,176.21x = 586,855.85 × 121,290.15
  4. Step 4: Simplify right side
    391,176.21x = 71,179,833,468.43
  5. Step 5: Solve for x
    x = 71,179,833,468.43/391,176.21
  6. Step 6: Final answer
    x = 181,963.61

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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.