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Finding the Fourth Proportional to 229,120.56, 343,569.78 and 79,369.38

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Solution

The fourth proportional to 229,120.56, 343,569.78 and 79,369.38 is: 119,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,120.56 : 343,569.78 = 79,369.38 : x
  2. Step 2: Convert to fraction form
    229,120.56/343,569.78 = 79,369.38/x
  3. Step 3: Cross multiply
    229,120.56x = 343,569.78 × 79,369.38
  4. Step 4: Simplify right side
    229,120.56x = 27,268,920,425.34
  5. Step 5: Solve for x
    x = 27,268,920,425.34/229,120.56
  6. Step 6: Final answer
    x = 119,015.60

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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.