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Finding the Fourth Proportional to 247,638.60, 371,457.90 and 89,872.20

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Solution

The fourth proportional to 247,638.60, 371,457.90 and 89,872.20 is: 134,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,638.60 : 371,457.90 = 89,872.20 : x
  2. Step 2: Convert to fraction form
    247,638.60/371,457.90 = 89,872.20/x
  3. Step 3: Cross multiply
    247,638.60x = 371,457.90 × 89,872.20
  4. Step 4: Simplify right side
    247,638.60x = 33,383,738,680.38
  5. Step 5: Solve for x
    x = 33,383,738,680.38/247,638.60
  6. Step 6: Final answer
    x = 134,808.30

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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.