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Finding the Fourth Proportional to 218,771.75, 301,905.06 and 118,169.75

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Solution

The fourth proportional to 218,771.75, 301,905.06 and 118,169.75 is: 163,074.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,771.75 : 301,905.06 = 118,169.75 : x
  2. Step 2: Convert to fraction form
    218,771.75/301,905.06 = 118,169.75/x
  3. Step 3: Cross multiply
    218,771.75x = 301,905.06 × 118,169.75
  4. Step 4: Simplify right side
    218,771.75x = 35,676,045,463.94
  5. Step 5: Solve for x
    x = 35,676,045,463.94/218,771.75
  6. Step 6: Final answer
    x = 163,074.28

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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.