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Finding the Fourth Proportional to 397,323.25, 548,306.09 and 218,475.25

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Solution

The fourth proportional to 397,323.25, 548,306.09 and 218,475.25 is: 301,495.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,323.25 : 548,306.09 = 218,475.25 : x
  2. Step 2: Convert to fraction form
    397,323.25/548,306.09 = 218,475.25/x
  3. Step 3: Cross multiply
    397,323.25x = 548,306.09 × 218,475.25
  4. Step 4: Simplify right side
    397,323.25x = 119,791,308,996.90
  5. Step 5: Solve for x
    x = 119,791,308,996.90/397,323.25
  6. Step 6: Final answer
    x = 301,495.85

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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.