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Finding the Fourth Proportional to 542,136.63, 813,099.78 and 205,203.57

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Solution

The fourth proportional to 542,136.63, 813,099.78 and 205,203.57 is: 307,765.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,136.63 : 813,099.78 = 205,203.57 : x
  2. Step 2: Convert to fraction form
    542,136.63/813,099.78 = 205,203.57/x
  3. Step 3: Cross multiply
    542,136.63x = 813,099.78 × 205,203.57
  4. Step 4: Simplify right side
    542,136.63x = 166,850,977,622.22
  5. Step 5: Solve for x
    x = 166,850,977,622.22/542,136.63
  6. Step 6: Final answer
    x = 307,765.55

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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.