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Finding the Fourth Proportional to 218,788.75, 301,928.75 and 118,186.75

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Solution

The fourth proportional to 218,788.75, 301,928.75 and 118,186.75 is: 163,097.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,788.75 : 301,928.75 = 118,186.75 : x
  2. Step 2: Convert to fraction form
    218,788.75/301,928.75 = 118,186.75/x
  3. Step 3: Cross multiply
    218,788.75x = 301,928.75 × 118,186.75
  4. Step 4: Simplify right side
    218,788.75x = 35,683,977,694.06
  5. Step 5: Solve for x
    x = 35,683,977,694.06/218,788.75
  6. Step 6: Final answer
    x = 163,097.86

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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.