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Finding the Fourth Proportional to 368,086.80, 552,454.20 and 218,139.60

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Solution

The fourth proportional to 368,086.80, 552,454.20 and 218,139.60 is: 327,401.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,086.80 : 552,454.20 = 218,139.60 : x
  2. Step 2: Convert to fraction form
    368,086.80/552,454.20 = 218,139.60/x
  3. Step 3: Cross multiply
    368,086.80x = 552,454.20 × 218,139.60
  4. Step 4: Simplify right side
    368,086.80x = 120,512,138,206.32
  5. Step 5: Solve for x
    x = 120,512,138,206.32/368,086.80
  6. Step 6: Final answer
    x = 327,401.41

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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.