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Finding the Fourth Proportional to 316,460.43, 436,715.87 and 173,229.54

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Solution

The fourth proportional to 316,460.43, 436,715.87 and 173,229.54 is: 239,057.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,460.43 : 436,715.87 = 173,229.54 : x
  2. Step 2: Convert to fraction form
    316,460.43/436,715.87 = 173,229.54/x
  3. Step 3: Cross multiply
    316,460.43x = 436,715.87 × 173,229.54
  4. Step 4: Simplify right side
    316,460.43x = 75,652,088,404.65
  5. Step 5: Solve for x
    x = 75,652,088,404.65/316,460.43
  6. Step 6: Final answer
    x = 239,057.02

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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.