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Finding the Fourth Proportional to 309,453.51, 464,130.44 and 84,761.39

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Solution

The fourth proportional to 309,453.51, 464,130.44 and 84,761.39 is: 127,128.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,453.51 : 464,130.44 = 84,761.39 : x
  2. Step 2: Convert to fraction form
    309,453.51/464,130.44 = 84,761.39/x
  3. Step 3: Cross multiply
    309,453.51x = 464,130.44 × 84,761.39
  4. Step 4: Simplify right side
    309,453.51x = 39,340,342,290.09
  5. Step 5: Solve for x
    x = 39,340,342,290.09/309,453.51
  6. Step 6: Final answer
    x = 127,128.44

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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.