Home / 319,051.38-478,414.29-105,743.35

Finding the Fourth Proportional to 319,051.38, 478,414.29 and 105,743.35

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Solution

The fourth proportional to 319,051.38, 478,414.29 and 105,743.35 is: 158,561.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,051.38 : 478,414.29 = 105,743.35 : x
  2. Step 2: Convert to fraction form
    319,051.38/478,414.29 = 105,743.35/x
  3. Step 3: Cross multiply
    319,051.38x = 478,414.29 × 105,743.35
  4. Step 4: Simplify right side
    319,051.38x = 50,589,126,791.68
  5. Step 5: Solve for x
    x = 50,589,126,791.68/319,051.38
  6. Step 6: Final answer
    x = 158,561.07

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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.