Home / 312,749.66-468,761.58-143,915.54

Finding the Fourth Proportional to 312,749.66, 468,761.58 and 143,915.54

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Solution

The fourth proportional to 312,749.66, 468,761.58 and 143,915.54 is: 215,706.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,749.66 : 468,761.58 = 143,915.54 : x
  2. Step 2: Convert to fraction form
    312,749.66/468,761.58 = 143,915.54/x
  3. Step 3: Cross multiply
    312,749.66x = 468,761.58 × 143,915.54
  4. Step 4: Simplify right side
    312,749.66x = 67,462,073,573.15
  5. Step 5: Solve for x
    x = 67,462,073,573.15/312,749.66
  6. Step 6: Final answer
    x = 215,706.31

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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.