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Finding the Fourth Proportional to 316,418.28, 436,654.62 and 173,177.94

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Solution

The fourth proportional to 316,418.28, 436,654.62 and 173,177.94 is: 238,984.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,418.28 : 436,654.62 = 173,177.94 : x
  2. Step 2: Convert to fraction form
    316,418.28/436,654.62 = 173,177.94/x
  3. Step 3: Cross multiply
    316,418.28x = 436,654.62 × 173,177.94
  4. Step 4: Simplify right side
    316,418.28x = 75,618,947,583.08
  5. Step 5: Solve for x
    x = 75,618,947,583.08/316,418.28
  6. Step 6: Final answer
    x = 238,984.13

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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.