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Finding the Fourth Proportional to 319,493.76, 479,100.64 and 119,673.92

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Solution

The fourth proportional to 319,493.76, 479,100.64 and 119,673.92 is: 179,458.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,493.76 : 479,100.64 = 119,673.92 : x
  2. Step 2: Convert to fraction form
    319,493.76/479,100.64 = 119,673.92/x
  3. Step 3: Cross multiply
    319,493.76x = 479,100.64 × 119,673.92
  4. Step 4: Simplify right side
    319,493.76x = 57,335,851,663.31
  5. Step 5: Solve for x
    x = 57,335,851,663.31/319,493.76
  6. Step 6: Final answer
    x = 179,458.44

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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.