Home / 396,885.12-548,176.32-289,282.56

Finding the Fourth Proportional to 396,885.12, 548,176.32 and 289,282.56

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Solution

The fourth proportional to 396,885.12, 548,176.32 and 289,282.56 is: 399,556.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,885.12 : 548,176.32 = 289,282.56 : x
  2. Step 2: Convert to fraction form
    396,885.12/548,176.32 = 289,282.56/x
  3. Step 3: Cross multiply
    396,885.12x = 548,176.32 × 289,282.56
  4. Step 4: Simplify right side
    396,885.12x = 158,577,849,180.98
  5. Step 5: Solve for x
    x = 158,577,849,180.98/396,885.12
  6. Step 6: Final answer
    x = 399,556.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.