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Finding the Fourth Proportional to 259,704.30, 389,556.45 and 231,710.70

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Solution

The fourth proportional to 259,704.30, 389,556.45 and 231,710.70 is: 347,566.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,704.30 : 389,556.45 = 231,710.70 : x
  2. Step 2: Convert to fraction form
    259,704.30/389,556.45 = 231,710.70/x
  3. Step 3: Cross multiply
    259,704.30x = 389,556.45 × 231,710.70
  4. Step 4: Simplify right side
    259,704.30x = 90,264,397,719.02
  5. Step 5: Solve for x
    x = 90,264,397,719.02/259,704.30
  6. Step 6: Final answer
    x = 347,566.05

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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.