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Finding the Fourth Proportional to 319,609.53, 479,289.69 and 119,821.01

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Solution

The fourth proportional to 319,609.53, 479,289.69 and 119,821.01 is: 179,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,609.53 : 479,289.69 = 119,821.01 : x
  2. Step 2: Convert to fraction form
    319,609.53/479,289.69 = 119,821.01/x
  3. Step 3: Cross multiply
    319,609.53x = 479,289.69 × 119,821.01
  4. Step 4: Simplify right side
    319,609.53x = 57,428,974,738.39
  5. Step 5: Solve for x
    x = 57,428,974,738.39/319,609.53
  6. Step 6: Final answer
    x = 179,684.80

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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.