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Finding the Fourth Proportional to 316,363.20, 436,581.21 and 173,123.29

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Solution

The fourth proportional to 316,363.20, 436,581.21 and 173,123.29 is: 238,910.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,363.20 : 436,581.21 = 173,123.29 : x
  2. Step 2: Convert to fraction form
    316,363.20/436,581.21 = 173,123.29/x
  3. Step 3: Cross multiply
    316,363.20x = 436,581.21 × 173,123.29
  4. Step 4: Simplify right side
    316,363.20x = 75,582,375,427.38
  5. Step 5: Solve for x
    x = 75,582,375,427.38/316,363.20
  6. Step 6: Final answer
    x = 238,910.14

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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.