Home / 391,895.96-587,352.04-211,974.20

Finding the Fourth Proportional to 391,895.96, 587,352.04 and 211,974.20

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Solution

The fourth proportional to 391,895.96, 587,352.04 and 211,974.20 is: 317,695.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,895.96 : 587,352.04 = 211,974.20 : x
  2. Step 2: Convert to fraction form
    391,895.96/587,352.04 = 211,974.20/x
  3. Step 3: Cross multiply
    391,895.96x = 587,352.04 × 211,974.20
  4. Step 4: Simplify right side
    391,895.96x = 124,503,478,797.37
  5. Step 5: Solve for x
    x = 124,503,478,797.37/391,895.96
  6. Step 6: Final answer
    x = 317,695.23

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1.5x scale

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.