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Finding the Fourth Proportional to 505,467.36, 697,535.64 and 279,108

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Solution

The fourth proportional to 505,467.36, 697,535.64 and 279,108 is: 385,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,467.36 : 697,535.64 = 279,108 : x
  2. Step 2: Convert to fraction form
    505,467.36/697,535.64 = 279,108/x
  3. Step 3: Cross multiply
    505,467.36x = 697,535.64 × 279,108
  4. Step 4: Simplify right side
    505,467.36x = 194,687,777,409.12
  5. Step 5: Solve for x
    x = 194,687,777,409.12/505,467.36
  6. Step 6: Final answer
    x = 385,163.90

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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.