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Finding the Fourth Proportional to 373,644.12, 515,640.21 and 212,522.34

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Solution

The fourth proportional to 373,644.12, 515,640.21 and 212,522.34 is: 293,287.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,644.12 : 515,640.21 = 212,522.34 : x
  2. Step 2: Convert to fraction form
    373,644.12/515,640.21 = 212,522.34/x
  3. Step 3: Cross multiply
    373,644.12x = 515,640.21 × 212,522.34
  4. Step 4: Simplify right side
    373,644.12x = 109,585,064,027.29
  5. Step 5: Solve for x
    x = 109,585,064,027.29/373,644.12
  6. Step 6: Final answer
    x = 293,287.27

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1.5x scale

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.