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Finding the Fourth Proportional to 222,494.80, 333,742.20 and 128,016.40

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Solution

The fourth proportional to 222,494.80, 333,742.20 and 128,016.40 is: 192,024.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,494.80 : 333,742.20 = 128,016.40 : x
  2. Step 2: Convert to fraction form
    222,494.80/333,742.20 = 128,016.40/x
  3. Step 3: Cross multiply
    222,494.80x = 333,742.20 × 128,016.40
  4. Step 4: Simplify right side
    222,494.80x = 42,724,474,972.08
  5. Step 5: Solve for x
    x = 42,724,474,972.08/222,494.80
  6. Step 6: Final answer
    x = 192,024.60

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1.5x scale

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.