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Finding the Fourth Proportional to 321,454.65, 482,148.15 and 131,935.06

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Solution

The fourth proportional to 321,454.65, 482,148.15 and 131,935.06 is: 197,888.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,454.65 : 482,148.15 = 131,935.06 : x
  2. Step 2: Convert to fraction form
    321,454.65/482,148.15 = 131,935.06/x
  3. Step 3: Cross multiply
    321,454.65x = 482,148.15 × 131,935.06
  4. Step 4: Simplify right side
    321,454.65x = 63,612,245,099.14
  5. Step 5: Solve for x
    x = 63,612,245,099.14/321,454.65
  6. Step 6: Final answer
    x = 197,888.71

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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.