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Finding the Fourth Proportional to 316,605.12, 436,914.81 and 173,367.96

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Solution

The fourth proportional to 316,605.12, 436,914.81 and 173,367.96 is: 239,247.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,605.12 : 436,914.81 = 173,367.96 : x
  2. Step 2: Convert to fraction form
    316,605.12/436,914.81 = 173,367.96/x
  3. Step 3: Cross multiply
    316,605.12x = 436,914.81 × 173,367.96
  4. Step 4: Simplify right side
    316,605.12x = 75,747,029,303.49
  5. Step 5: Solve for x
    x = 75,747,029,303.49/316,605.12
  6. Step 6: Final answer
    x = 239,247.64

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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.