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Finding the Fourth Proportional to 200,435.96, 300,392.82 and 111,685.88

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Solution

The fourth proportional to 200,435.96, 300,392.82 and 111,685.88 is: 167,383.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,435.96 : 300,392.82 = 111,685.88 : x
  2. Step 2: Convert to fraction form
    200,435.96/300,392.82 = 111,685.88/x
  3. Step 3: Cross multiply
    200,435.96x = 300,392.82 × 111,685.88
  4. Step 4: Simplify right side
    200,435.96x = 33,549,636,447.38
  5. Step 5: Solve for x
    x = 33,549,636,447.38/200,435.96
  6. Step 6: Final answer
    x = 167,383.32

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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.