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Finding the Fourth Proportional to 605,655.90, 908,483.85 and 206,163.90

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Solution

The fourth proportional to 605,655.90, 908,483.85 and 206,163.90 is: 309,245.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,655.90 : 908,483.85 = 206,163.90 : x
  2. Step 2: Convert to fraction form
    605,655.90/908,483.85 = 206,163.90/x
  3. Step 3: Cross multiply
    605,655.90x = 908,483.85 × 206,163.90
  4. Step 4: Simplify right side
    605,655.90x = 187,296,573,603.02
  5. Step 5: Solve for x
    x = 187,296,573,603.02/605,655.90
  6. Step 6: Final answer
    x = 309,245.85

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Double scale
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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.