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Finding the Fourth Proportional to 352,157.41, 485,973.65 and 191,009

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Solution

The fourth proportional to 352,157.41, 485,973.65 and 191,009 is: 263,590.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,157.41 : 485,973.65 = 191,009 : x
  2. Step 2: Convert to fraction form
    352,157.41/485,973.65 = 191,009/x
  3. Step 3: Cross multiply
    352,157.41x = 485,973.65 × 191,009
  4. Step 4: Simplify right side
    352,157.41x = 92,825,340,912.85
  5. Step 5: Solve for x
    x = 92,825,340,912.85/352,157.41
  6. Step 6: Final answer
    x = 263,590.48

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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.