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Finding the Fourth Proportional to 260,407.87, 389,974.77 and 235,164.42

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Solution

The fourth proportional to 260,407.87, 389,974.77 and 235,164.42 is: 352,171.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,407.87 : 389,974.77 = 235,164.42 : x
  2. Step 2: Convert to fraction form
    260,407.87/389,974.77 = 235,164.42/x
  3. Step 3: Cross multiply
    260,407.87x = 389,974.77 × 235,164.42
  4. Step 4: Simplify right side
    260,407.87x = 91,708,190,601.68
  5. Step 5: Solve for x
    x = 91,708,190,601.68/260,407.87
  6. Step 6: Final answer
    x = 352,171.35

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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.