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Finding the Fourth Proportional to 368,449.68, 552,674.64 and 131,778.20

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Solution

The fourth proportional to 368,449.68, 552,674.64 and 131,778.20 is: 197,667.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,449.68 : 552,674.64 = 131,778.20 : x
  2. Step 2: Convert to fraction form
    368,449.68/552,674.64 = 131,778.20/x
  3. Step 3: Cross multiply
    368,449.68x = 552,674.64 × 131,778.20
  4. Step 4: Simplify right side
    368,449.68x = 72,830,469,244.85
  5. Step 5: Solve for x
    x = 72,830,469,244.85/368,449.68
  6. Step 6: Final answer
    x = 197,667.34

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1.5x scale

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.