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Finding the Fourth Proportional to 353,181.80, 529,311.90 and 163,620.20

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Solution

The fourth proportional to 353,181.80, 529,311.90 and 163,620.20 is: 245,216.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,181.80 : 529,311.90 = 163,620.20 : x
  2. Step 2: Convert to fraction form
    353,181.80/529,311.90 = 163,620.20/x
  3. Step 3: Cross multiply
    353,181.80x = 529,311.90 × 163,620.20
  4. Step 4: Simplify right side
    353,181.80x = 86,606,118,940.38
  5. Step 5: Solve for x
    x = 86,606,118,940.38/353,181.80
  6. Step 6: Final answer
    x = 245,216.82

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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.