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Finding the Fourth Proportional to 230,489, 318,074.82 and 124,505

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Solution

The fourth proportional to 230,489, 318,074.82 and 124,505 is: 171,816.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,489 : 318,074.82 = 124,505 : x
  2. Step 2: Convert to fraction form
    230,489/318,074.82 = 124,505/x
  3. Step 3: Cross multiply
    230,489x = 318,074.82 × 124,505
  4. Step 4: Simplify right side
    230,489x = 39,601,905,464.10
  5. Step 5: Solve for x
    x = 39,601,905,464.10/230,489
  6. Step 6: Final answer
    x = 171,816.90

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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.