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Finding the Fourth Proportional to 385,997.88, 532,661.49 and 213,918.34

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Solution

The fourth proportional to 385,997.88, 532,661.49 and 213,918.34 is: 295,198.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,997.88 : 532,661.49 = 213,918.34 : x
  2. Step 2: Convert to fraction form
    385,997.88/532,661.49 = 213,918.34/x
  3. Step 3: Cross multiply
    385,997.88x = 532,661.49 × 213,918.34
  4. Step 4: Simplify right side
    385,997.88x = 113,946,061,722.73
  5. Step 5: Solve for x
    x = 113,946,061,722.73/385,997.88
  6. Step 6: Final answer
    x = 295,198.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.