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Finding the Fourth Proportional to 605,614.40, 908,421.60 and 206,122.40

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Solution

The fourth proportional to 605,614.40, 908,421.60 and 206,122.40 is: 309,183.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,614.40 : 908,421.60 = 206,122.40 : x
  2. Step 2: Convert to fraction form
    605,614.40/908,421.60 = 206,122.40/x
  3. Step 3: Cross multiply
    605,614.40x = 908,421.60 × 206,122.40
  4. Step 4: Simplify right side
    605,614.40x = 187,246,040,403.84
  5. Step 5: Solve for x
    x = 187,246,040,403.84/605,614.40
  6. Step 6: Final answer
    x = 309,183.60

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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.