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Finding the Fourth Proportional to 397,273.75, 548,237.78 and 218,425.75

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Solution

The fourth proportional to 397,273.75, 548,237.78 and 218,425.75 is: 301,427.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,273.75 : 548,237.78 = 218,425.75 : x
  2. Step 2: Convert to fraction form
    397,273.75/548,237.78 = 218,425.75/x
  3. Step 3: Cross multiply
    397,273.75x = 548,237.78 × 218,425.75
  4. Step 4: Simplify right side
    397,273.75x = 119,749,248,274.84
  5. Step 5: Solve for x
    x = 119,749,248,274.84/397,273.75
  6. Step 6: Final answer
    x = 301,427.54

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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.