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Finding the Fourth Proportional to 555,004.22, 765,905.82 and 300,355.46

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Solution

The fourth proportional to 555,004.22, 765,905.82 and 300,355.46 is: 414,490.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,004.22 : 765,905.82 = 300,355.46 : x
  2. Step 2: Convert to fraction form
    555,004.22/765,905.82 = 300,355.46/x
  3. Step 3: Cross multiply
    555,004.22x = 765,905.82 × 300,355.46
  4. Step 4: Simplify right side
    555,004.22x = 230,043,994,882.78
  5. Step 5: Solve for x
    x = 230,043,994,882.78/555,004.22
  6. Step 6: Final answer
    x = 414,490.53

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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.