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Finding the Fourth Proportional to 212,354.28, 318,383.80 and 93,961.04

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Solution

The fourth proportional to 212,354.28, 318,383.80 and 93,961.04 is: 140,876.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,354.28 : 318,383.80 = 93,961.04 : x
  2. Step 2: Convert to fraction form
    212,354.28/318,383.80 = 93,961.04/x
  3. Step 3: Cross multiply
    212,354.28x = 318,383.80 × 93,961.04
  4. Step 4: Simplify right side
    212,354.28x = 29,915,671,140.33
  5. Step 5: Solve for x
    x = 29,915,671,140.33/212,354.28
  6. Step 6: Final answer
    x = 140,876.23

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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.