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Finding the Fourth Proportional to 230,572.17, 318,135.42 and 139,926.11

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Solution

The fourth proportional to 230,572.17, 318,135.42 and 139,926.11 is: 193,065.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,572.17 : 318,135.42 = 139,926.11 : x
  2. Step 2: Convert to fraction form
    230,572.17/318,135.42 = 139,926.11/x
  3. Step 3: Cross multiply
    230,572.17x = 318,135.42 × 139,926.11
  4. Step 4: Simplify right side
    230,572.17x = 44,515,450,183.14
  5. Step 5: Solve for x
    x = 44,515,450,183.14/230,572.17
  6. Step 6: Final answer
    x = 193,065.15

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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.