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Finding the Fourth Proportional to 483,239.91, 666,790.99 and 279,309.85

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Solution

The fourth proportional to 483,239.91, 666,790.99 and 279,309.85 is: 385,401.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,239.91 : 666,790.99 = 279,309.85 : x
  2. Step 2: Convert to fraction form
    483,239.91/666,790.99 = 279,309.85/x
  3. Step 3: Cross multiply
    483,239.91x = 666,790.99 × 279,309.85
  4. Step 4: Simplify right side
    483,239.91x = 186,241,291,398.25
  5. Step 5: Solve for x
    x = 186,241,291,398.25/483,239.91
  6. Step 6: Final answer
    x = 385,401.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.