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Finding the Fourth Proportional to 228,611.16, 315,483.12 and 126,636.62

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Solution

The fourth proportional to 228,611.16, 315,483.12 and 126,636.62 is: 174,758.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,611.16 : 315,483.12 = 126,636.62 : x
  2. Step 2: Convert to fraction form
    228,611.16/315,483.12 = 126,636.62/x
  3. Step 3: Cross multiply
    228,611.16x = 315,483.12 × 126,636.62
  4. Step 4: Simplify right side
    228,611.16x = 39,951,714,406.44
  5. Step 5: Solve for x
    x = 39,951,714,406.44/228,611.16
  6. Step 6: Final answer
    x = 174,758.37

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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.