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Finding the Fourth Proportional to 555,481.81, 766,564.18 and 300,834.01

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Solution

The fourth proportional to 555,481.81, 766,564.18 and 300,834.01 is: 415,150.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,481.81 : 766,564.18 = 300,834.01 : x
  2. Step 2: Convert to fraction form
    555,481.81/766,564.18 = 300,834.01/x
  3. Step 3: Cross multiply
    555,481.81x = 766,564.18 × 300,834.01
  4. Step 4: Simplify right side
    555,481.81x = 230,608,576,191.76
  5. Step 5: Solve for x
    x = 230,608,576,191.76/555,481.81
  6. Step 6: Final answer
    x = 415,150.55

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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.