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Finding the Fourth Proportional to 319,653.36, 479,563.08 and 262,820.94

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Solution

The fourth proportional to 319,653.36, 479,563.08 and 262,820.94 is: 394,299.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,653.36 : 479,563.08 = 262,820.94 : x
  2. Step 2: Convert to fraction form
    319,653.36/479,563.08 = 262,820.94/x
  3. Step 3: Cross multiply
    319,653.36x = 479,563.08 × 262,820.94
  4. Step 4: Simplify right side
    319,653.36x = 126,039,219,474.90
  5. Step 5: Solve for x
    x = 126,039,219,474.90/319,653.36
  6. Step 6: Final answer
    x = 394,299.69

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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.