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Finding the Fourth Proportional to 213,133.44, 319,699.62 and 200,142.12

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Solution

The fourth proportional to 213,133.44, 319,699.62 and 200,142.12 is: 300,212.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,133.44 : 319,699.62 = 200,142.12 : x
  2. Step 2: Convert to fraction form
    213,133.44/319,699.62 = 200,142.12/x
  3. Step 3: Cross multiply
    213,133.44x = 319,699.62 × 200,142.12
  4. Step 4: Simplify right side
    213,133.44x = 63,985,359,709.99
  5. Step 5: Solve for x
    x = 63,985,359,709.99/213,133.44
  6. Step 6: Final answer
    x = 300,212.67

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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.