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Finding the Fourth Proportional to 260,111.20, 389,713.20 and 119,581.60

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Solution

The fourth proportional to 260,111.20, 389,713.20 and 119,581.60 is: 179,163.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,111.20 : 389,713.20 = 119,581.60 : x
  2. Step 2: Convert to fraction form
    260,111.20/389,713.20 = 119,581.60/x
  3. Step 3: Cross multiply
    260,111.20x = 389,713.20 × 119,581.60
  4. Step 4: Simplify right side
    260,111.20x = 46,602,527,997.12
  5. Step 5: Solve for x
    x = 46,602,527,997.12/260,111.20
  6. Step 6: Final answer
    x = 179,163.87

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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.