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Finding the Fourth Proportional to 260,000.82, 389,733.64 and 126,716.16

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Solution

The fourth proportional to 260,000.82, 389,733.64 and 126,716.16 is: 189,943.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,000.82 : 389,733.64 = 126,716.16 : x
  2. Step 2: Convert to fraction form
    260,000.82/389,733.64 = 126,716.16/x
  3. Step 3: Cross multiply
    260,000.82x = 389,733.64 × 126,716.16
  4. Step 4: Simplify right side
    260,000.82x = 49,385,550,283.62
  5. Step 5: Solve for x
    x = 49,385,550,283.62/260,000.82
  6. Step 6: Final answer
    x = 189,943.83

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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.