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Finding the Fourth Proportional to 331,607.20, 497,119.20 and 198,540.40

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Solution

The fourth proportional to 331,607.20, 497,119.20 and 198,540.40 is: 297,636.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,607.20 : 497,119.20 = 198,540.40 : x
  2. Step 2: Convert to fraction form
    331,607.20/497,119.20 = 198,540.40/x
  3. Step 3: Cross multiply
    331,607.20x = 497,119.20 × 198,540.40
  4. Step 4: Simplify right side
    331,607.20x = 98,698,244,815.68
  5. Step 5: Solve for x
    x = 98,698,244,815.68/331,607.20
  6. Step 6: Final answer
    x = 297,636.01

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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.