Home / 443,929.90-665,129.40-206,786.20

Finding the Fourth Proportional to 443,929.90, 665,129.40 and 206,786.20

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Solution

The fourth proportional to 443,929.90, 665,129.40 and 206,786.20 is: 309,822.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,929.90 : 665,129.40 = 206,786.20 : x
  2. Step 2: Convert to fraction form
    443,929.90/665,129.40 = 206,786.20/x
  3. Step 3: Cross multiply
    443,929.90x = 665,129.40 × 206,786.20
  4. Step 4: Simplify right side
    443,929.90x = 137,539,581,134.28
  5. Step 5: Solve for x
    x = 137,539,581,134.28/443,929.90
  6. Step 6: Final answer
    x = 309,822.75

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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.