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Finding the Fourth Proportional to 484,121.40, 726,084.90 and 231,401.40

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Solution

The fourth proportional to 484,121.40, 726,084.90 and 231,401.40 is: 347,055.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,121.40 : 726,084.90 = 231,401.40 : x
  2. Step 2: Convert to fraction form
    484,121.40/726,084.90 = 231,401.40/x
  3. Step 3: Cross multiply
    484,121.40x = 726,084.90 × 231,401.40
  4. Step 4: Simplify right side
    484,121.40x = 168,017,062,378.86
  5. Step 5: Solve for x
    x = 168,017,062,378.86/484,121.40
  6. Step 6: Final answer
    x = 347,055.64

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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.