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Finding the Fourth Proportional to 373,193.21, 515,005.48 and 212,040.47

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Solution

The fourth proportional to 373,193.21, 515,005.48 and 212,040.47 is: 292,615.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,193.21 : 515,005.48 = 212,040.47 : x
  2. Step 2: Convert to fraction form
    373,193.21/515,005.48 = 212,040.47/x
  3. Step 3: Cross multiply
    373,193.21x = 515,005.48 × 212,040.47
  4. Step 4: Simplify right side
    373,193.21x = 109,202,004,031.78
  5. Step 5: Solve for x
    x = 109,202,004,031.78/373,193.21
  6. Step 6: Final answer
    x = 292,615.20

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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.