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Finding the Fourth Proportional to 222,118.78, 306,522.78 and 120,144.13

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Solution

The fourth proportional to 222,118.78, 306,522.78 and 120,144.13 is: 165,798.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,118.78 : 306,522.78 = 120,144.13 : x
  2. Step 2: Convert to fraction form
    222,118.78/306,522.78 = 120,144.13/x
  3. Step 3: Cross multiply
    222,118.78x = 306,522.78 × 120,144.13
  4. Step 4: Simplify right side
    222,118.78x = 36,826,912,728.28
  5. Step 5: Solve for x
    x = 36,826,912,728.28/222,118.78
  6. Step 6: Final answer
    x = 165,798.28

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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.