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Finding the Fourth Proportional to 319,611.28, 479,292.31 and 119,822.76

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Solution

The fourth proportional to 319,611.28, 479,292.31 and 119,822.76 is: 179,687.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,611.28 : 479,292.31 = 119,822.76 : x
  2. Step 2: Convert to fraction form
    319,611.28/479,292.31 = 119,822.76/x
  3. Step 3: Cross multiply
    319,611.28x = 479,292.31 × 119,822.76
  4. Step 4: Simplify right side
    319,611.28x = 57,430,127,430.98
  5. Step 5: Solve for x
    x = 57,430,127,430.98/319,611.28
  6. Step 6: Final answer
    x = 179,687.42

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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.