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Finding the Fourth Proportional to 236,115.96, 325,830.52 and 128,683.68

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Solution

The fourth proportional to 236,115.96, 325,830.52 and 128,683.68 is: 177,578.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,115.96 : 325,830.52 = 128,683.68 : x
  2. Step 2: Convert to fraction form
    236,115.96/325,830.52 = 128,683.68/x
  3. Step 3: Cross multiply
    236,115.96x = 325,830.52 × 128,683.68
  4. Step 4: Simplify right side
    236,115.96x = 41,929,070,369.91
  5. Step 5: Solve for x
    x = 41,929,070,369.91/236,115.96
  6. Step 6: Final answer
    x = 177,578.30

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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.