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Finding the Fourth Proportional to 316,489.84, 436,757.18 and 173,263.21

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Solution

The fourth proportional to 316,489.84, 436,757.18 and 173,263.21 is: 239,103.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,489.84 : 436,757.18 = 173,263.21 : x
  2. Step 2: Convert to fraction form
    316,489.84/436,757.18 = 173,263.21/x
  3. Step 3: Cross multiply
    316,489.84x = 436,757.18 × 173,263.21
  4. Step 4: Simplify right side
    316,489.84x = 75,673,950,997.35
  5. Step 5: Solve for x
    x = 75,673,950,997.35/316,489.84
  6. Step 6: Final answer
    x = 239,103.89

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1.5x scale

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.