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Finding the Fourth Proportional to 275,328.30, 412,992.45 and 264,830.70

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Solution

The fourth proportional to 275,328.30, 412,992.45 and 264,830.70 is: 397,246.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,328.30 : 412,992.45 = 264,830.70 : x
  2. Step 2: Convert to fraction form
    275,328.30/412,992.45 = 264,830.70/x
  3. Step 3: Cross multiply
    275,328.30x = 412,992.45 × 264,830.70
  4. Step 4: Simplify right side
    275,328.30x = 109,373,079,628.22
  5. Step 5: Solve for x
    x = 109,373,079,628.22/275,328.30
  6. Step 6: Final answer
    x = 397,246.05

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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.