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Finding the Fourth Proportional to 315,392.03, 472,906.25 and 215,673.03

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Solution

The fourth proportional to 315,392.03, 472,906.25 and 215,673.03 is: 323,385.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,392.03 : 472,906.25 = 215,673.03 : x
  2. Step 2: Convert to fraction form
    315,392.03/472,906.25 = 215,673.03/x
  3. Step 3: Cross multiply
    315,392.03x = 472,906.25 × 215,673.03
  4. Step 4: Simplify right side
    315,392.03x = 101,993,123,573.85
  5. Step 5: Solve for x
    x = 101,993,123,573.85/315,392.03
  6. Step 6: Final answer
    x = 323,385.23

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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.