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Finding the Fourth Proportional to 533,425.75, 800,138.64 and 139,441.75

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Solution

The fourth proportional to 533,425.75, 800,138.64 and 139,441.75 is: 209,162.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,425.75 : 800,138.64 = 139,441.75 : x
  2. Step 2: Convert to fraction form
    533,425.75/800,138.64 = 139,441.75/x
  3. Step 3: Cross multiply
    533,425.75x = 800,138.64 × 139,441.75
  4. Step 4: Simplify right side
    533,425.75x = 111,572,732,204.22
  5. Step 5: Solve for x
    x = 111,572,732,204.22/533,425.75
  6. Step 6: Final answer
    x = 209,162.63

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Similar ratio
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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.