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Finding the Fourth Proportional to 373,121.57, 514,921.67 and 212,003.90

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Solution

The fourth proportional to 373,121.57, 514,921.67 and 212,003.90 is: 292,573.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,121.57 : 514,921.67 = 212,003.90 : x
  2. Step 2: Convert to fraction form
    373,121.57/514,921.67 = 212,003.90/x
  3. Step 3: Cross multiply
    373,121.57x = 514,921.67 × 212,003.90
  4. Step 4: Simplify right side
    373,121.57x = 109,165,401,174.49
  5. Step 5: Solve for x
    x = 109,165,401,174.49/373,121.57
  6. Step 6: Final answer
    x = 292,573.28

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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.