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Finding the Fourth Proportional to 338,378.29, 467,577.89 and 321,980.65

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Solution

The fourth proportional to 338,378.29, 467,577.89 and 321,980.65 is: 444,919.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,378.29 : 467,577.89 = 321,980.65 : x
  2. Step 2: Convert to fraction form
    338,378.29/467,577.89 = 321,980.65/x
  3. Step 3: Cross multiply
    338,378.29x = 467,577.89 × 321,980.65
  4. Step 4: Simplify right side
    338,378.29x = 150,551,032,947.83
  5. Step 5: Solve for x
    x = 150,551,032,947.83/338,378.29
  6. Step 6: Final answer
    x = 444,919.30

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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.