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Finding the Fourth Proportional to 368,458.60, 552,687.90 and 131,819.80

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Solution

The fourth proportional to 368,458.60, 552,687.90 and 131,819.80 is: 197,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,458.60 : 552,687.90 = 131,819.80 : x
  2. Step 2: Convert to fraction form
    368,458.60/552,687.90 = 131,819.80/x
  3. Step 3: Cross multiply
    368,458.60x = 552,687.90 × 131,819.80
  4. Step 4: Simplify right side
    368,458.60x = 72,855,208,440.42
  5. Step 5: Solve for x
    x = 72,855,208,440.42/368,458.60
  6. Step 6: Final answer
    x = 197,729.70

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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.