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Finding the Fourth Proportional to 373,845, 515,901.42 and 212,699.64

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Solution

The fourth proportional to 373,845, 515,901.42 and 212,699.64 is: 293,522.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,845 : 515,901.42 = 212,699.64 : x
  2. Step 2: Convert to fraction form
    373,845/515,901.42 = 212,699.64/x
  3. Step 3: Cross multiply
    373,845x = 515,901.42 × 212,699.64
  4. Step 4: Simplify right side
    373,845x = 109,732,046,309.49
  5. Step 5: Solve for x
    x = 109,732,046,309.49/373,845
  6. Step 6: Final answer
    x = 293,522.84

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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.