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Finding the Fourth Proportional to 316,291.44, 436,478.31 and 173,049.42

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Solution

The fourth proportional to 316,291.44, 436,478.31 and 173,049.42 is: 238,806.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,291.44 : 436,478.31 = 173,049.42 : x
  2. Step 2: Convert to fraction form
    316,291.44/436,478.31 = 173,049.42/x
  3. Step 3: Cross multiply
    316,291.44x = 436,478.31 × 173,049.42
  4. Step 4: Simplify right side
    316,291.44x = 75,532,318,388.08
  5. Step 5: Solve for x
    x = 75,532,318,388.08/316,291.44
  6. Step 6: Final answer
    x = 238,806.08

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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.