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Finding the Fourth Proportional to 212,558.88, 318,837.78 and 145,796.52

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Solution

The fourth proportional to 212,558.88, 318,837.78 and 145,796.52 is: 218,694.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,558.88 : 318,837.78 = 145,796.52 : x
  2. Step 2: Convert to fraction form
    212,558.88/318,837.78 = 145,796.52/x
  3. Step 3: Cross multiply
    212,558.88x = 318,837.78 × 145,796.52
  4. Step 4: Simplify right side
    212,558.88x = 46,485,438,768.53
  5. Step 5: Solve for x
    x = 46,485,438,768.53/212,558.88
  6. Step 6: Final answer
    x = 218,694.41

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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.