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Finding the Fourth Proportional to 368,518.60, 552,777.90 and 131,879.80

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Solution

The fourth proportional to 368,518.60, 552,777.90 and 131,879.80 is: 197,819.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,518.60 : 552,777.90 = 131,879.80 : x
  2. Step 2: Convert to fraction form
    368,518.60/552,777.90 = 131,879.80/x
  3. Step 3: Cross multiply
    368,518.60x = 552,777.90 × 131,879.80
  4. Step 4: Simplify right side
    368,518.60x = 72,900,238,896.42
  5. Step 5: Solve for x
    x = 72,900,238,896.42/368,518.60
  6. Step 6: Final answer
    x = 197,819.70

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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.