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Finding the Fourth Proportional to 329,286.48, 494,004.56 and 139,753.76

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Solution

The fourth proportional to 329,286.48, 494,004.56 and 139,753.76 is: 209,662.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,286.48 : 494,004.56 = 139,753.76 : x
  2. Step 2: Convert to fraction form
    329,286.48/494,004.56 = 139,753.76/x
  3. Step 3: Cross multiply
    329,286.48x = 494,004.56 × 139,753.76
  4. Step 4: Simplify right side
    329,286.48x = 69,038,994,717.15
  5. Step 5: Solve for x
    x = 69,038,994,717.15/329,286.48
  6. Step 6: Final answer
    x = 209,662.40

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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.