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Finding the Fourth Proportional to 230,544.55, 318,103.36 and 139,948.21

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Solution

The fourth proportional to 230,544.55, 318,103.36 and 139,948.21 is: 193,099.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,544.55 : 318,103.36 = 139,948.21 : x
  2. Step 2: Convert to fraction form
    230,544.55/318,103.36 = 139,948.21/x
  3. Step 3: Cross multiply
    230,544.55x = 318,103.36 × 139,948.21
  4. Step 4: Simplify right side
    230,544.55x = 44,517,995,826.99
  5. Step 5: Solve for x
    x = 44,517,995,826.99/230,544.55
  6. Step 6: Final answer
    x = 193,099.32

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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.