Home / 316,212.10-436,375.86-172,969

Finding the Fourth Proportional to 316,212.10, 436,375.86 and 172,969

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Solution

The fourth proportional to 316,212.10, 436,375.86 and 172,969 is: 238,698.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,212.10 : 436,375.86 = 172,969 : x
  2. Step 2: Convert to fraction form
    316,212.10/436,375.86 = 172,969/x
  3. Step 3: Cross multiply
    316,212.10x = 436,375.86 × 172,969
  4. Step 4: Simplify right side
    316,212.10x = 75,479,496,128.34
  5. Step 5: Solve for x
    x = 75,479,496,128.34/316,212.10
  6. Step 6: Final answer
    x = 238,698.95

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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.