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Finding the Fourth Proportional to 397,223.70, 548,179.45 and 215,947.82

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Solution

The fourth proportional to 397,223.70, 548,179.45 and 215,947.82 is: 298,013.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,223.70 : 548,179.45 = 215,947.82 : x
  2. Step 2: Convert to fraction form
    397,223.70/548,179.45 = 215,947.82/x
  3. Step 3: Cross multiply
    397,223.70x = 548,179.45 × 215,947.82
  4. Step 4: Simplify right side
    397,223.70x = 118,378,158,026.88
  5. Step 5: Solve for x
    x = 118,378,158,026.88/397,223.70
  6. Step 6: Final answer
    x = 298,013.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.