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Finding the Fourth Proportional to 289,218.60, 433,993.88 and 225,860.85

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Solution

The fourth proportional to 289,218.60, 433,993.88 and 225,860.85 is: 338,920.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,218.60 : 433,993.88 = 225,860.85 : x
  2. Step 2: Convert to fraction form
    289,218.60/433,993.88 = 225,860.85/x
  3. Step 3: Cross multiply
    289,218.60x = 433,993.88 × 225,860.85
  4. Step 4: Simplify right side
    289,218.60x = 98,022,227,196.25
  5. Step 5: Solve for x
    x = 98,022,227,196.25/289,218.60
  6. Step 6: Final answer
    x = 338,920.90

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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.