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Finding the Fourth Proportional to 218,555.16, 301,628.70 and 133,728.60

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Solution

The fourth proportional to 218,555.16, 301,628.70 and 133,728.60 is: 184,559.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,555.16 : 301,628.70 = 133,728.60 : x
  2. Step 2: Convert to fraction form
    218,555.16/301,628.70 = 133,728.60/x
  3. Step 3: Cross multiply
    218,555.16x = 301,628.70 × 133,728.60
  4. Step 4: Simplify right side
    218,555.16x = 40,336,383,770.82
  5. Step 5: Solve for x
    x = 40,336,383,770.82/218,555.16
  6. Step 6: Final answer
    x = 184,559.28

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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.