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Finding the Fourth Proportional to 291,646.40, 437,229.60 and 131,732.80

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Solution

The fourth proportional to 291,646.40, 437,229.60 and 131,732.80 is: 197,490.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,646.40 : 437,229.60 = 131,732.80 : x
  2. Step 2: Convert to fraction form
    291,646.40/437,229.60 = 131,732.80/x
  3. Step 3: Cross multiply
    291,646.40x = 437,229.60 × 131,732.80
  4. Step 4: Simplify right side
    291,646.40x = 57,597,479,450.88
  5. Step 5: Solve for x
    x = 57,597,479,450.88/291,646.40
  6. Step 6: Final answer
    x = 197,490.80

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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.