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Finding the Fourth Proportional to 469,879.65, 648,436.32 and 276,276.42

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Solution

The fourth proportional to 469,879.65, 648,436.32 and 276,276.42 is: 381,262.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,879.65 : 648,436.32 = 276,276.42 : x
  2. Step 2: Convert to fraction form
    469,879.65/648,436.32 = 276,276.42/x
  3. Step 3: Cross multiply
    469,879.65x = 648,436.32 × 276,276.42
  4. Step 4: Simplify right side
    469,879.65x = 179,147,665,087.57
  5. Step 5: Solve for x
    x = 179,147,665,087.57/469,879.65
  6. Step 6: Final answer
    x = 381,262.87

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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.