Home / 396,020.95-546,508.22-221,591.30

Finding the Fourth Proportional to 396,020.95, 546,508.22 and 221,591.30

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Solution

The fourth proportional to 396,020.95, 546,508.22 and 221,591.30 is: 305,795.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,020.95 : 546,508.22 = 221,591.30 : x
  2. Step 2: Convert to fraction form
    396,020.95/546,508.22 = 221,591.30/x
  3. Step 3: Cross multiply
    396,020.95x = 546,508.22 × 221,591.30
  4. Step 4: Simplify right side
    396,020.95x = 121,101,463,089.99
  5. Step 5: Solve for x
    x = 121,101,463,089.99/396,020.95
  6. Step 6: Final answer
    x = 305,795.60

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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.