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Finding the Fourth Proportional to 315,078.39, 472,236.21 and 226,148.22

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Solution

The fourth proportional to 315,078.39, 472,236.21 and 226,148.22 is: 338,948.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,078.39 : 472,236.21 = 226,148.22 : x
  2. Step 2: Convert to fraction form
    315,078.39/472,236.21 = 226,148.22/x
  3. Step 3: Cross multiply
    315,078.39x = 472,236.21 × 226,148.22
  4. Step 4: Simplify right side
    315,078.39x = 106,795,378,311.05
  5. Step 5: Solve for x
    x = 106,795,378,311.05/315,078.39
  6. Step 6: Final answer
    x = 338,948.60

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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.