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Finding the Fourth Proportional to 316,003.88, 436,067.70 and 172,735.40

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Solution

The fourth proportional to 316,003.88, 436,067.70 and 172,735.40 is: 238,365.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,003.88 : 436,067.70 = 172,735.40 : x
  2. Step 2: Convert to fraction form
    316,003.88/436,067.70 = 172,735.40/x
  3. Step 3: Cross multiply
    316,003.88x = 436,067.70 × 172,735.40
  4. Step 4: Simplify right side
    316,003.88x = 75,324,328,586.58
  5. Step 5: Solve for x
    x = 75,324,328,586.58/316,003.88
  6. Step 6: Final answer
    x = 238,365.20

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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.