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Finding the Fourth Proportional to 316,589.94, 436,889.78 and 173,349.97

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Solution

The fourth proportional to 316,589.94, 436,889.78 and 173,349.97 is: 239,220.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,589.94 : 436,889.78 = 173,349.97 : x
  2. Step 2: Convert to fraction form
    316,589.94/436,889.78 = 173,349.97/x
  3. Step 3: Cross multiply
    316,589.94x = 436,889.78 × 173,349.97
  4. Step 4: Simplify right side
    316,589.94x = 75,734,830,917.35
  5. Step 5: Solve for x
    x = 75,734,830,917.35/316,589.94
  6. Step 6: Final answer
    x = 239,220.58

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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.