Home / 259,500.88-389,307.78-79,586.38

Finding the Fourth Proportional to 259,500.88, 389,307.78 and 79,586.38

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Solution

The fourth proportional to 259,500.88, 389,307.78 and 79,586.38 is: 119,396.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,500.88 : 389,307.78 = 79,586.38 : x
  2. Step 2: Convert to fraction form
    259,500.88/389,307.78 = 79,586.38/x
  3. Step 3: Cross multiply
    259,500.88x = 389,307.78 × 79,586.38
  4. Step 4: Simplify right side
    259,500.88x = 30,983,596,916.04
  5. Step 5: Solve for x
    x = 30,983,596,916.04/259,500.88
  6. Step 6: Final answer
    x = 119,396.89

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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.