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Finding the Fourth Proportional to 373,809.10, 515,838.54 and 212,648.98

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Solution

The fourth proportional to 373,809.10, 515,838.54 and 212,648.98 is: 293,445.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,809.10 : 515,838.54 = 212,648.98 : x
  2. Step 2: Convert to fraction form
    373,809.10/515,838.54 = 212,648.98/x
  3. Step 3: Cross multiply
    373,809.10x = 515,838.54 × 212,648.98
  4. Step 4: Simplify right side
    373,809.10x = 109,692,539,375.69
  5. Step 5: Solve for x
    x = 109,692,539,375.69/373,809.10
  6. Step 6: Final answer
    x = 293,445.34

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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.