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Finding the Fourth Proportional to 260,197.89, 390,296.88 and 82,704.93

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Solution

The fourth proportional to 260,197.89, 390,296.88 and 82,704.93 is: 124,057.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,197.89 : 390,296.88 = 82,704.93 : x
  2. Step 2: Convert to fraction form
    260,197.89/390,296.88 = 82,704.93/x
  3. Step 3: Cross multiply
    260,197.89x = 390,296.88 × 82,704.93
  4. Step 4: Simplify right side
    260,197.89x = 32,279,476,139.62
  5. Step 5: Solve for x
    x = 32,279,476,139.62/260,197.89
  6. Step 6: Final answer
    x = 124,057.41

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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.