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Finding the Fourth Proportional to 347,630.25, 479,729.75 and 188,654.25

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Solution

The fourth proportional to 347,630.25, 479,729.75 and 188,654.25 is: 260,342.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,630.25 : 479,729.75 = 188,654.25 : x
  2. Step 2: Convert to fraction form
    347,630.25/479,729.75 = 188,654.25/x
  3. Step 3: Cross multiply
    347,630.25x = 479,729.75 × 188,654.25
  4. Step 4: Simplify right side
    347,630.25x = 90,503,055,245.67
  5. Step 5: Solve for x
    x = 90,503,055,245.67/347,630.25
  6. Step 6: Final answer
    x = 260,342.87

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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.