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Finding the Fourth Proportional to 555,145.92, 766,103.90 and 300,497.11

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Solution

The fourth proportional to 555,145.92, 766,103.90 and 300,497.11 is: 414,687.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,145.92 : 766,103.90 = 300,497.11 : x
  2. Step 2: Convert to fraction form
    555,145.92/766,103.90 = 300,497.11/x
  3. Step 3: Cross multiply
    555,145.92x = 766,103.90 × 300,497.11
  4. Step 4: Simplify right side
    555,145.92x = 230,212,004,491.98
  5. Step 5: Solve for x
    x = 230,212,004,491.98/555,145.92
  6. Step 6: Final answer
    x = 414,687.38

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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.