Home / 259,429.40-389,096.10-72,402.20

Finding the Fourth Proportional to 259,429.40, 389,096.10 and 72,402.20

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Solution

The fourth proportional to 259,429.40, 389,096.10 and 72,402.20 is: 108,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,429.40 : 389,096.10 = 72,402.20 : x
  2. Step 2: Convert to fraction form
    259,429.40/389,096.10 = 72,402.20/x
  3. Step 3: Cross multiply
    259,429.40x = 389,096.10 × 72,402.20
  4. Step 4: Simplify right side
    259,429.40x = 28,171,413,651.42
  5. Step 5: Solve for x
    x = 28,171,413,651.42/259,429.40
  6. Step 6: Final answer
    x = 108,589.90

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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.