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Finding the Fourth Proportional to 264,389.84, 396,475.96 and 131,221.20

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Solution

The fourth proportional to 264,389.84, 396,475.96 and 131,221.20 is: 196,777.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,389.84 : 396,475.96 = 131,221.20 : x
  2. Step 2: Convert to fraction form
    264,389.84/396,475.96 = 131,221.20/x
  3. Step 3: Cross multiply
    264,389.84x = 396,475.96 × 131,221.20
  4. Step 4: Simplify right side
    264,389.84x = 52,026,051,242.35
  5. Step 5: Solve for x
    x = 52,026,051,242.35/264,389.84
  6. Step 6: Final answer
    x = 196,777.80

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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.