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Finding the Fourth Proportional to 259,440.40, 389,452.20 and 200,537.20

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Solution

The fourth proportional to 259,440.40, 389,452.20 and 200,537.20 is: 301,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,440.40 : 389,452.20 = 200,537.20 : x
  2. Step 2: Convert to fraction form
    259,440.40/389,452.20 = 200,537.20/x
  3. Step 3: Cross multiply
    259,440.40x = 389,452.20 × 200,537.20
  4. Step 4: Simplify right side
    259,440.40x = 78,099,653,721.84
  5. Step 5: Solve for x
    x = 78,099,653,721.84/259,440.40
  6. Step 6: Final answer
    x = 301,031.20

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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.