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Finding the Fourth Proportional to 371,842.32, 557,830.44 and 135,516.72

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Solution

The fourth proportional to 371,842.32, 557,830.44 and 135,516.72 is: 203,299.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,842.32 : 557,830.44 = 135,516.72 : x
  2. Step 2: Convert to fraction form
    371,842.32/557,830.44 = 135,516.72/x
  3. Step 3: Cross multiply
    371,842.32x = 557,830.44 × 135,516.72
  4. Step 4: Simplify right side
    371,842.32x = 75,595,351,544.96
  5. Step 5: Solve for x
    x = 75,595,351,544.96/371,842.32
  6. Step 6: Final answer
    x = 203,299.48

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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.