Home / 313,163.10-469,742.40-76,503.60

Finding the Fourth Proportional to 313,163.10, 469,742.40 and 76,503.60

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Solution

The fourth proportional to 313,163.10, 469,742.40 and 76,503.60 is: 114,754.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,163.10 : 469,742.40 = 76,503.60 : x
  2. Step 2: Convert to fraction form
    313,163.10/469,742.40 = 76,503.60/x
  3. Step 3: Cross multiply
    313,163.10x = 469,742.40 × 76,503.60
  4. Step 4: Simplify right side
    313,163.10x = 35,936,984,672.64
  5. Step 5: Solve for x
    x = 35,936,984,672.64/313,163.10
  6. Step 6: Final answer
    x = 114,754.85

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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.