Home / 212,392.62-318,589.05-145,630.34

Finding the Fourth Proportional to 212,392.62, 318,589.05 and 145,630.34

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Solution

The fourth proportional to 212,392.62, 318,589.05 and 145,630.34 is: 218,445.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,392.62 : 318,589.05 = 145,630.34 : x
  2. Step 2: Convert to fraction form
    212,392.62/318,589.05 = 145,630.34/x
  3. Step 3: Cross multiply
    212,392.62x = 318,589.05 × 145,630.34
  4. Step 4: Simplify right side
    212,392.62x = 46,396,231,671.78
  5. Step 5: Solve for x
    x = 46,396,231,671.78/212,392.62
  6. Step 6: Final answer
    x = 218,445.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.