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Finding the Fourth Proportional to 370,960.53, 511,925.57 and 209,812.15

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Solution

The fourth proportional to 370,960.53, 511,925.57 and 209,812.15 is: 289,540.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,960.53 : 511,925.57 = 209,812.15 : x
  2. Step 2: Convert to fraction form
    370,960.53/511,925.57 = 209,812.15/x
  3. Step 3: Cross multiply
    370,960.53x = 511,925.57 × 209,812.15
  4. Step 4: Simplify right side
    370,960.53x = 107,408,204,481.68
  5. Step 5: Solve for x
    x = 107,408,204,481.68/370,960.53
  6. Step 6: Final answer
    x = 289,540.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.