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Finding the Fourth Proportional to 605,709.70, 908,564.55 and 206,800.90

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Solution

The fourth proportional to 605,709.70, 908,564.55 and 206,800.90 is: 310,201.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,709.70 : 908,564.55 = 206,800.90 : x
  2. Step 2: Convert to fraction form
    605,709.70/908,564.55 = 206,800.90/x
  3. Step 3: Cross multiply
    605,709.70x = 908,564.55 × 206,800.90
  4. Step 4: Simplify right side
    605,709.70x = 187,891,966,648.10
  5. Step 5: Solve for x
    x = 187,891,966,648.10/605,709.70
  6. Step 6: Final answer
    x = 310,201.35

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Similar ratio
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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.