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Finding the Fourth Proportional to 403,685.20, 605,236.20 and 226,246.60

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Solution

The fourth proportional to 403,685.20, 605,236.20 and 226,246.60 is: 339,206.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,685.20 : 605,236.20 = 226,246.60 : x
  2. Step 2: Convert to fraction form
    403,685.20/605,236.20 = 226,246.60/x
  3. Step 3: Cross multiply
    403,685.20x = 605,236.20 × 226,246.60
  4. Step 4: Simplify right side
    403,685.20x = 136,932,632,446.92
  5. Step 5: Solve for x
    x = 136,932,632,446.92/403,685.20
  6. Step 6: Final answer
    x = 339,206.47

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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.