Home / 411,972.37-618,293.78-212,349.85

Finding the Fourth Proportional to 411,972.37, 618,293.78 and 212,349.85

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Solution

The fourth proportional to 411,972.37, 618,293.78 and 212,349.85 is: 318,697.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,972.37 : 618,293.78 = 212,349.85 : x
  2. Step 2: Convert to fraction form
    411,972.37/618,293.78 = 212,349.85/x
  3. Step 3: Cross multiply
    411,972.37x = 618,293.78 × 212,349.85
  4. Step 4: Simplify right side
    411,972.37x = 131,294,591,438.93
  5. Step 5: Solve for x
    x = 131,294,591,438.93/411,972.37
  6. Step 6: Final answer
    x = 318,697.57

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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.