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Finding the Fourth Proportional to 321,355.28, 443,240.00 and 212,333.33

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Solution

The fourth proportional to 321,355.28, 443,240.00 and 212,333.33 is: 292,867.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,355.28 : 443,240.00 = 212,333.33 : x
  2. Step 2: Convert to fraction form
    321,355.28/443,240.00 = 212,333.33/x
  3. Step 3: Cross multiply
    321,355.28x = 443,240.00 × 212,333.33
  4. Step 4: Simplify right side
    321,355.28x = 94,114,626,031.88
  5. Step 5: Solve for x
    x = 94,114,626,031.88/321,355.28
  6. Step 6: Final answer
    x = 292,867.84

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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.