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Finding the Fourth Proportional to 319,610.28, 479,290.80 and 119,821.77

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Solution

The fourth proportional to 319,610.28, 479,290.80 and 119,821.77 is: 179,685.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,610.28 : 479,290.80 = 119,821.77 : x
  2. Step 2: Convert to fraction form
    319,610.28/479,290.80 = 119,821.77/x
  3. Step 3: Cross multiply
    319,610.28x = 479,290.80 × 119,821.77
  4. Step 4: Simplify right side
    319,610.28x = 57,429,472,000.72
  5. Step 5: Solve for x
    x = 57,429,472,000.72/319,610.28
  6. Step 6: Final answer
    x = 179,685.94

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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.