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Finding the Fourth Proportional to 222,365.88, 306,865 and 120,391.34

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Solution

The fourth proportional to 222,365.88, 306,865 and 120,391.34 is: 166,140.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,365.88 : 306,865 = 120,391.34 : x
  2. Step 2: Convert to fraction form
    222,365.88/306,865 = 120,391.34/x
  3. Step 3: Cross multiply
    222,365.88x = 306,865 × 120,391.34
  4. Step 4: Simplify right side
    222,365.88x = 36,943,888,549.10
  5. Step 5: Solve for x
    x = 36,943,888,549.10/222,365.88
  6. Step 6: Final answer
    x = 166,140.10

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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.