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Finding the Fourth Proportional to 259,675.80, 389,513.70 and 231,682.20

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Solution

The fourth proportional to 259,675.80, 389,513.70 and 231,682.20 is: 347,523.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,675.80 : 389,513.70 = 231,682.20 : x
  2. Step 2: Convert to fraction form
    259,675.80/389,513.70 = 231,682.20/x
  3. Step 3: Cross multiply
    259,675.80x = 389,513.70 × 231,682.20
  4. Step 4: Simplify right side
    259,675.80x = 90,243,390,946.14
  5. Step 5: Solve for x
    x = 90,243,390,946.14/259,675.80
  6. Step 6: Final answer
    x = 347,523.30

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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.