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Finding the Fourth Proportional to 370,648.73, 511,504.11 and 209,504.39

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Solution

The fourth proportional to 370,648.73, 511,504.11 and 209,504.39 is: 289,121.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,648.73 : 511,504.11 = 209,504.39 : x
  2. Step 2: Convert to fraction form
    370,648.73/511,504.11 = 209,504.39/x
  3. Step 3: Cross multiply
    370,648.73x = 511,504.11 × 209,504.39
  4. Step 4: Simplify right side
    370,648.73x = 107,162,357,826.80
  5. Step 5: Solve for x
    x = 107,162,357,826.80/370,648.73
  6. Step 6: Final answer
    x = 289,121.08

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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.