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Finding the Fourth Proportional to 316,449.03, 436,703.77 and 173,206

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Solution

The fourth proportional to 316,449.03, 436,703.77 and 173,206 is: 239,026.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,449.03 : 436,703.77 = 173,206 : x
  2. Step 2: Convert to fraction form
    316,449.03/436,703.77 = 173,206/x
  3. Step 3: Cross multiply
    316,449.03x = 436,703.77 × 173,206
  4. Step 4: Simplify right side
    316,449.03x = 75,639,713,186.62
  5. Step 5: Solve for x
    x = 75,639,713,186.62/316,449.03
  6. Step 6: Final answer
    x = 239,026.53

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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.