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Finding the Fourth Proportional to 555,260.31, 766,259.46 and 300,611.43

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Solution

The fourth proportional to 555,260.31, 766,259.46 and 300,611.43 is: 414,843.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,260.31 : 766,259.46 = 300,611.43 : x
  2. Step 2: Convert to fraction form
    555,260.31/766,259.46 = 300,611.43/x
  3. Step 3: Cross multiply
    555,260.31x = 766,259.46 × 300,611.43
  4. Step 4: Simplify right side
    555,260.31x = 230,346,352,021.63
  5. Step 5: Solve for x
    x = 230,346,352,021.63/555,260.31
  6. Step 6: Final answer
    x = 414,843.90

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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.