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Finding the Fourth Proportional to 331,363.60, 497,128.20 and 106,745.20

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Solution

The fourth proportional to 331,363.60, 497,128.20 and 106,745.20 is: 160,144.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,363.60 : 497,128.20 = 106,745.20 : x
  2. Step 2: Convert to fraction form
    331,363.60/497,128.20 = 106,745.20/x
  3. Step 3: Cross multiply
    331,363.60x = 497,128.20 × 106,745.20
  4. Step 4: Simplify right side
    331,363.60x = 53,066,049,134.64
  5. Step 5: Solve for x
    x = 53,066,049,134.64/331,363.60
  6. Step 6: Final answer
    x = 160,144.47

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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.