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Finding the Fourth Proportional to 228,608.58, 315,484.32 and 136,822.38

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Solution

The fourth proportional to 228,608.58, 315,484.32 and 136,822.38 is: 188,817.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,608.58 : 315,484.32 = 136,822.38 : x
  2. Step 2: Convert to fraction form
    228,608.58/315,484.32 = 136,822.38/x
  3. Step 3: Cross multiply
    228,608.58x = 315,484.32 × 136,822.38
  4. Step 4: Simplify right side
    228,608.58x = 43,165,315,515.08
  5. Step 5: Solve for x
    x = 43,165,315,515.08/228,608.58
  6. Step 6: Final answer
    x = 188,817.57

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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.