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Finding the Fourth Proportional to 264,885.20, 397,788.60 and 140,469.20

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Solution

The fourth proportional to 264,885.20, 397,788.60 and 140,469.20 is: 210,948.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,885.20 : 397,788.60 = 140,469.20 : x
  2. Step 2: Convert to fraction form
    264,885.20/397,788.60 = 140,469.20/x
  3. Step 3: Cross multiply
    264,885.20x = 397,788.60 × 140,469.20
  4. Step 4: Simplify right side
    264,885.20x = 55,877,046,411.12
  5. Step 5: Solve for x
    x = 55,877,046,411.12/264,885.20
  6. Step 6: Final answer
    x = 210,948.16

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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.