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Finding the Fourth Proportional to 320,878.08, 444,837.51 and 303,813

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Solution

The fourth proportional to 320,878.08, 444,837.51 and 303,813 is: 421,179.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,878.08 : 444,837.51 = 303,813 : x
  2. Step 2: Convert to fraction form
    320,878.08/444,837.51 = 303,813/x
  3. Step 3: Cross multiply
    320,878.08x = 444,837.51 × 303,813
  4. Step 4: Simplify right side
    320,878.08x = 135,147,418,425.63
  5. Step 5: Solve for x
    x = 135,147,418,425.63/320,878.08
  6. Step 6: Final answer
    x = 421,179.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.