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Finding the Fourth Proportional to 809,879.20, 1,214,818.80 and 248,840.80

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Solution

The fourth proportional to 809,879.20, 1,214,818.80 and 248,840.80 is: 373,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,879.20 : 1,214,818.80 = 248,840.80 : x
  2. Step 2: Convert to fraction form
    809,879.20/1,214,818.80 = 248,840.80/x
  3. Step 3: Cross multiply
    809,879.20x = 1,214,818.80 × 248,840.80
  4. Step 4: Simplify right side
    809,879.20x = 302,296,482,047.04
  5. Step 5: Solve for x
    x = 302,296,482,047.04/809,879.20
  6. Step 6: Final answer
    x = 373,261.20

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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.