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Finding the Fourth Proportional to 373,228.54, 515,068.60 and 212,090.38

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Solution

The fourth proportional to 373,228.54, 515,068.60 and 212,090.38 is: 292,692.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,228.54 : 515,068.60 = 212,090.38 : x
  2. Step 2: Convert to fraction form
    373,228.54/515,068.60 = 212,090.38/x
  3. Step 3: Cross multiply
    373,228.54x = 515,068.60 × 212,090.38
  4. Step 4: Simplify right side
    373,228.54x = 109,241,095,100.07
  5. Step 5: Solve for x
    x = 109,241,095,100.07/373,228.54
  6. Step 6: Final answer
    x = 292,692.23

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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.