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Finding the Fourth Proportional to 202,246.60, 279,155.82 and 117,391

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Solution

The fourth proportional to 202,246.60, 279,155.82 and 117,391 is: 162,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,246.60 : 279,155.82 = 117,391 : x
  2. Step 2: Convert to fraction form
    202,246.60/279,155.82 = 117,391/x
  3. Step 3: Cross multiply
    202,246.60x = 279,155.82 × 117,391
  4. Step 4: Simplify right side
    202,246.60x = 32,770,380,865.62
  5. Step 5: Solve for x
    x = 32,770,380,865.62/202,246.60
  6. Step 6: Final answer
    x = 162,031.80

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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.