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Finding the Fourth Proportional to 365,428.92, 548,149.44 and 128,774.46

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Solution

The fourth proportional to 365,428.92, 548,149.44 and 128,774.46 is: 193,163.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,428.92 : 548,149.44 = 128,774.46 : x
  2. Step 2: Convert to fraction form
    365,428.92/548,149.44 = 128,774.46/x
  3. Step 3: Cross multiply
    365,428.92x = 548,149.44 × 128,774.46
  4. Step 4: Simplify right side
    365,428.92x = 70,587,648,135.30
  5. Step 5: Solve for x
    x = 70,587,648,135.30/365,428.92
  6. Step 6: Final answer
    x = 193,163.83

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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.