Home / 289,028.20-433,542.30-78,665.80

Finding the Fourth Proportional to 289,028.20, 433,542.30 and 78,665.80

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Solution

The fourth proportional to 289,028.20, 433,542.30 and 78,665.80 is: 117,998.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,028.20 : 433,542.30 = 78,665.80 : x
  2. Step 2: Convert to fraction form
    289,028.20/433,542.30 = 78,665.80/x
  3. Step 3: Cross multiply
    289,028.20x = 433,542.30 × 78,665.80
  4. Step 4: Simplify right side
    289,028.20x = 34,104,951,863.34
  5. Step 5: Solve for x
    x = 34,104,951,863.34/289,028.20
  6. Step 6: Final answer
    x = 117,998.70

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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.