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Finding the Fourth Proportional to 319,796.21, 479,945 and 223,104.63

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Solution

The fourth proportional to 319,796.21, 479,945 and 223,104.63 is: 334,831.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,796.21 : 479,945 = 223,104.63 : x
  2. Step 2: Convert to fraction form
    319,796.21/479,945 = 223,104.63/x
  3. Step 3: Cross multiply
    319,796.21x = 479,945 × 223,104.63
  4. Step 4: Simplify right side
    319,796.21x = 107,077,951,645.35
  5. Step 5: Solve for x
    x = 107,077,951,645.35/319,796.21
  6. Step 6: Final answer
    x = 334,831.83

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1.5x scale

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.