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Finding the Fourth Proportional to 370,992.62, 511,969.90 and 209,844.20

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Solution

The fourth proportional to 370,992.62, 511,969.90 and 209,844.20 is: 289,585.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,992.62 : 511,969.90 = 209,844.20 : x
  2. Step 2: Convert to fraction form
    370,992.62/511,969.90 = 209,844.20/x
  3. Step 3: Cross multiply
    370,992.62x = 511,969.90 × 209,844.20
  4. Step 4: Simplify right side
    370,992.62x = 107,433,914,089.58
  5. Step 5: Solve for x
    x = 107,433,914,089.58/370,992.62
  6. Step 6: Final answer
    x = 289,585.04

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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.