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Finding the Fourth Proportional to 204,779.70, 307,169.55 and 133,920.90

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Solution

The fourth proportional to 204,779.70, 307,169.55 and 133,920.90 is: 200,881.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,779.70 : 307,169.55 = 133,920.90 : x
  2. Step 2: Convert to fraction form
    204,779.70/307,169.55 = 133,920.90/x
  3. Step 3: Cross multiply
    204,779.70x = 307,169.55 × 133,920.90
  4. Step 4: Simplify right side
    204,779.70x = 41,136,422,588.60
  5. Step 5: Solve for x
    x = 41,136,422,588.60/204,779.70
  6. Step 6: Final answer
    x = 200,881.35

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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.