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Finding the Fourth Proportional to 373,840.67, 515,893.51 and 212,692.28

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Solution

The fourth proportional to 373,840.67, 515,893.51 and 212,692.28 is: 293,511.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,840.67 : 515,893.51 = 212,692.28 : x
  2. Step 2: Convert to fraction form
    373,840.67/515,893.51 = 212,692.28/x
  3. Step 3: Cross multiply
    373,840.67x = 515,893.51 × 212,692.28
  4. Step 4: Simplify right side
    373,840.67x = 109,726,566,271.01
  5. Step 5: Solve for x
    x = 109,726,566,271.01/373,840.67
  6. Step 6: Final answer
    x = 293,511.58

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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.