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Finding the Fourth Proportional to 539,319, 744,260.22 and 300,855

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Solution

The fourth proportional to 539,319, 744,260.22 and 300,855 is: 415,179.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,319 : 744,260.22 = 300,855 : x
  2. Step 2: Convert to fraction form
    539,319/744,260.22 = 300,855/x
  3. Step 3: Cross multiply
    539,319x = 744,260.22 × 300,855
  4. Step 4: Simplify right side
    539,319x = 223,914,408,488.10
  5. Step 5: Solve for x
    x = 223,914,408,488.10/539,319
  6. Step 6: Final answer
    x = 415,179.90

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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.