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Finding the Fourth Proportional to 316,429.44, 436,655.86 and 173,161.80

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Solution

The fourth proportional to 316,429.44, 436,655.86 and 173,161.80 is: 238,954.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,429.44 : 436,655.86 = 173,161.80 : x
  2. Step 2: Convert to fraction form
    316,429.44/436,655.86 = 173,161.80/x
  3. Step 3: Cross multiply
    316,429.44x = 436,655.86 × 173,161.80
  4. Step 4: Simplify right side
    316,429.44x = 75,612,115,239.28
  5. Step 5: Solve for x
    x = 75,612,115,239.28/316,429.44
  6. Step 6: Final answer
    x = 238,954.11

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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.