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Finding the Fourth Proportional to 319,774.55, 479,119.85 and 193,148.76

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Solution

The fourth proportional to 319,774.55, 479,119.85 and 193,148.76 is: 289,395.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,774.55 : 479,119.85 = 193,148.76 : x
  2. Step 2: Convert to fraction form
    319,774.55/479,119.85 = 193,148.76/x
  3. Step 3: Cross multiply
    319,774.55x = 479,119.85 × 193,148.76
  4. Step 4: Simplify right side
    319,774.55x = 92,541,405,348.65
  5. Step 5: Solve for x
    x = 92,541,405,348.65/319,774.55
  6. Step 6: Final answer
    x = 289,395.78

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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.