Home / 259,723.40-389,876.70-200,820.20

Finding the Fourth Proportional to 259,723.40, 389,876.70 and 200,820.20

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Solution

The fourth proportional to 259,723.40, 389,876.70 and 200,820.20 is: 301,455.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,723.40 : 389,876.70 = 200,820.20 : x
  2. Step 2: Convert to fraction form
    259,723.40/389,876.70 = 200,820.20/x
  3. Step 3: Cross multiply
    259,723.40x = 389,876.70 × 200,820.20
  4. Step 4: Simplify right side
    259,723.40x = 78,295,116,869.34
  5. Step 5: Solve for x
    x = 78,295,116,869.34/259,723.40
  6. Step 6: Final answer
    x = 301,455.77

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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.