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Finding the Fourth Proportional to 319,608.78, 479,288.57 and 119,820.26

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Solution

The fourth proportional to 319,608.78, 479,288.57 and 119,820.26 is: 179,683.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,608.78 : 479,288.57 = 119,820.26 : x
  2. Step 2: Convert to fraction form
    319,608.78/479,288.57 = 119,820.26/x
  3. Step 3: Cross multiply
    319,608.78x = 479,288.57 × 119,820.26
  4. Step 4: Simplify right side
    319,608.78x = 57,428,478,076.88
  5. Step 5: Solve for x
    x = 57,428,478,076.88/319,608.78
  6. Step 6: Final answer
    x = 179,683.67

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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.