Home / 668,361.87-1,002,142.39-212,756.27

Finding the Fourth Proportional to 668,361.87, 1,002,142.39 and 212,756.27

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Solution

The fourth proportional to 668,361.87, 1,002,142.39 and 212,756.27 is: 319,006.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,361.87 : 1,002,142.39 = 212,756.27 : x
  2. Step 2: Convert to fraction form
    668,361.87/1,002,142.39 = 212,756.27/x
  3. Step 3: Cross multiply
    668,361.87x = 1,002,142.39 × 212,756.27
  4. Step 4: Simplify right side
    668,361.87x = 213,212,071,362.68
  5. Step 5: Solve for x
    x = 213,212,071,362.68/668,361.87
  6. Step 6: Final answer
    x = 319,006.93

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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.