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Finding the Fourth Proportional to 384,883.02, 531,157.08 and 212,797.80

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Solution

The fourth proportional to 384,883.02, 531,157.08 and 212,797.80 is: 293,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,883.02 : 531,157.08 = 212,797.80 : x
  2. Step 2: Convert to fraction form
    384,883.02/531,157.08 = 212,797.80/x
  3. Step 3: Cross multiply
    384,883.02x = 531,157.08 × 212,797.80
  4. Step 4: Simplify right side
    384,883.02x = 113,029,058,078.42
  5. Step 5: Solve for x
    x = 113,029,058,078.42/384,883.02
  6. Step 6: Final answer
    x = 293,671.20

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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.