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Finding the Fourth Proportional to 518,209.22, 777,756.90 and 202,887.56

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Solution

The fourth proportional to 518,209.22, 777,756.90 and 202,887.56 is: 304,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,209.22 : 777,756.90 = 202,887.56 : x
  2. Step 2: Convert to fraction form
    518,209.22/777,756.90 = 202,887.56/x
  3. Step 3: Cross multiply
    518,209.22x = 777,756.90 × 202,887.56
  4. Step 4: Simplify right side
    518,209.22x = 157,797,199,714.16
  5. Step 5: Solve for x
    x = 157,797,199,714.16/518,209.22
  6. Step 6: Final answer
    x = 304,504.81

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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.