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Finding the Fourth Proportional to 228,478.90, 342,453.39 and 135,063.22

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Solution

The fourth proportional to 228,478.90, 342,453.39 and 135,063.22 is: 202,438.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,478.90 : 342,453.39 = 135,063.22 : x
  2. Step 2: Convert to fraction form
    228,478.90/342,453.39 = 135,063.22/x
  3. Step 3: Cross multiply
    228,478.90x = 342,453.39 × 135,063.22
  4. Step 4: Simplify right side
    228,478.90x = 46,252,857,553.32
  5. Step 5: Solve for x
    x = 46,252,857,553.32/228,478.90
  6. Step 6: Final answer
    x = 202,438.20

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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.