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Finding the Fourth Proportional to 319,620.94, 479,432.32 and 82,965.67

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Solution

The fourth proportional to 319,620.94, 479,432.32 and 82,965.67 is: 124,448.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,620.94 : 479,432.32 = 82,965.67 : x
  2. Step 2: Convert to fraction form
    319,620.94/479,432.32 = 82,965.67/x
  3. Step 3: Cross multiply
    319,620.94x = 479,432.32 × 82,965.67
  4. Step 4: Simplify right side
    319,620.94x = 39,776,422,242.46
  5. Step 5: Solve for x
    x = 39,776,422,242.46/319,620.94
  6. Step 6: Final answer
    x = 124,448.74

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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.