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Finding the Fourth Proportional to 373,811.10, 515,841.30 and 212,650.98

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Solution

The fourth proportional to 373,811.10, 515,841.30 and 212,650.98 is: 293,448.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,811.10 : 515,841.30 = 212,650.98 : x
  2. Step 2: Convert to fraction form
    373,811.10/515,841.30 = 212,650.98/x
  3. Step 3: Cross multiply
    373,811.10x = 515,841.30 × 212,650.98
  4. Step 4: Simplify right side
    373,811.10x = 109,694,157,969.47
  5. Step 5: Solve for x
    x = 109,694,157,969.47/373,811.10
  6. Step 6: Final answer
    x = 293,448.10

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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.