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Finding the Fourth Proportional to 222,993.12, 307,739.81 and 127,499.79

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Solution

The fourth proportional to 222,993.12, 307,739.81 and 127,499.79 is: 175,955.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,993.12 : 307,739.81 = 127,499.79 : x
  2. Step 2: Convert to fraction form
    222,993.12/307,739.81 = 127,499.79/x
  3. Step 3: Cross multiply
    222,993.12x = 307,739.81 × 127,499.79
  4. Step 4: Simplify right side
    222,993.12x = 39,236,761,468.39
  5. Step 5: Solve for x
    x = 39,236,761,468.39/222,993.12
  6. Step 6: Final answer
    x = 175,955.03

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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.