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Finding the Fourth Proportional to 260,649.66, 389,357.30 and 189,003.54

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Solution

The fourth proportional to 260,649.66, 389,357.30 and 189,003.54 is: 282,332.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,649.66 : 389,357.30 = 189,003.54 : x
  2. Step 2: Convert to fraction form
    260,649.66/389,357.30 = 189,003.54/x
  3. Step 3: Cross multiply
    260,649.66x = 389,357.30 × 189,003.54
  4. Step 4: Simplify right side
    260,649.66x = 73,589,907,079.82
  5. Step 5: Solve for x
    x = 73,589,907,079.82/260,649.66
  6. Step 6: Final answer
    x = 282,332.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.