Home / 206,484,369.20-309,773,216.19-68,309,649.98

Finding the Fourth Proportional to 206,484,369.20, 309,773,216.19 and 68,309,649.98

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Solution

The fourth proportional to 206,484,369.20, 309,773,216.19 and 68,309,649.98 is: 102,479,911.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,484,369.20 : 309,773,216.19 = 68,309,649.98 : x
  2. Step 2: Convert to fraction form
    206,484,369.20/309,773,216.19 = 68,309,649.98/x
  3. Step 3: Cross multiply
    206,484,369.20x = 309,773,216.19 × 68,309,649.98
  4. Step 4: Simplify right side
    206,484,369.20x = 21,160,499,971,117,772
  5. Step 5: Solve for x
    x = 21,160,499,971,117,772/206,484,369.20
  6. Step 6: Final answer
    x = 102,479,911.93

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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.