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Finding the Fourth Proportional to 308,749.59, 463,059.59 and 87,081.75

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Solution

The fourth proportional to 308,749.59, 463,059.59 and 87,081.75 is: 130,604.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,749.59 : 463,059.59 = 87,081.75 : x
  2. Step 2: Convert to fraction form
    308,749.59/463,059.59 = 87,081.75/x
  3. Step 3: Cross multiply
    308,749.59x = 463,059.59 × 87,081.75
  4. Step 4: Simplify right side
    308,749.59x = 40,324,039,016.07
  5. Step 5: Solve for x
    x = 40,324,039,016.07/308,749.59
  6. Step 6: Final answer
    x = 130,604.35

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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.