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Finding the Fourth Proportional to 298,068.90, 411,339.92 and 162,105.54

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Solution

The fourth proportional to 298,068.90, 411,339.92 and 162,105.54 is: 223,708.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,068.90 : 411,339.92 = 162,105.54 : x
  2. Step 2: Convert to fraction form
    298,068.90/411,339.92 = 162,105.54/x
  3. Step 3: Cross multiply
    298,068.90x = 411,339.92 × 162,105.54
  4. Step 4: Simplify right side
    298,068.90x = 66,680,479,855.16
  5. Step 5: Solve for x
    x = 66,680,479,855.16/298,068.90
  6. Step 6: Final answer
    x = 223,708.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.