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Finding the Fourth Proportional to 208,301.70, 312,452.55 and 189,930.90

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Solution

The fourth proportional to 208,301.70, 312,452.55 and 189,930.90 is: 284,896.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,301.70 : 312,452.55 = 189,930.90 : x
  2. Step 2: Convert to fraction form
    208,301.70/312,452.55 = 189,930.90/x
  3. Step 3: Cross multiply
    208,301.70x = 312,452.55 × 189,930.90
  4. Step 4: Simplify right side
    208,301.70x = 59,344,394,028.80
  5. Step 5: Solve for x
    x = 59,344,394,028.80/208,301.70
  6. Step 6: Final answer
    x = 284,896.35

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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.