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Finding the Fourth Proportional to 200,779.85, 300,849.87 and 106,006.21

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Solution

The fourth proportional to 200,779.85, 300,849.87 and 106,006.21 is: 158,840.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,779.85 : 300,849.87 = 106,006.21 : x
  2. Step 2: Convert to fraction form
    200,779.85/300,849.87 = 106,006.21/x
  3. Step 3: Cross multiply
    200,779.85x = 300,849.87 × 106,006.21
  4. Step 4: Simplify right side
    200,779.85x = 31,891,954,497.69
  5. Step 5: Solve for x
    x = 31,891,954,497.69/200,779.85
  6. Step 6: Final answer
    x = 158,840.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.