Home / 805,299.30-1,207,945.80-206,259.66

Finding the Fourth Proportional to 805,299.30, 1,207,945.80 and 206,259.66

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Solution

The fourth proportional to 805,299.30, 1,207,945.80 and 206,259.66 is: 309,388.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,299.30 : 1,207,945.80 = 206,259.66 : x
  2. Step 2: Convert to fraction form
    805,299.30/1,207,945.80 = 206,259.66/x
  3. Step 3: Cross multiply
    805,299.30x = 1,207,945.80 × 206,259.66
  4. Step 4: Simplify right side
    805,299.30x = 249,150,490,006.43
  5. Step 5: Solve for x
    x = 249,150,490,006.43/805,299.30
  6. Step 6: Final answer
    x = 309,388.68

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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.