Home / 319,316.22-478,974.33-129,879.65

Finding the Fourth Proportional to 319,316.22, 478,974.33 and 129,879.65

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Solution

The fourth proportional to 319,316.22, 478,974.33 and 129,879.65 is: 194,819.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,316.22 : 478,974.33 = 129,879.65 : x
  2. Step 2: Convert to fraction form
    319,316.22/478,974.33 = 129,879.65/x
  3. Step 3: Cross multiply
    319,316.22x = 478,974.33 × 129,879.65
  4. Step 4: Simplify right side
    319,316.22x = 62,209,016,842.59
  5. Step 5: Solve for x
    x = 62,209,016,842.59/319,316.22
  6. Step 6: Final answer
    x = 194,819.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.