Home / 311,921.57-430,568.40-242,874.53

Finding the Fourth Proportional to 311,921.57, 430,568.40 and 242,874.53

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Solution

The fourth proportional to 311,921.57, 430,568.40 and 242,874.53 is: 335,257.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,921.57 : 430,568.40 = 242,874.53 : x
  2. Step 2: Convert to fraction form
    311,921.57/430,568.40 = 242,874.53/x
  3. Step 3: Cross multiply
    311,921.57x = 430,568.40 × 242,874.53
  4. Step 4: Simplify right side
    311,921.57x = 104,574,097,782.85
  5. Step 5: Solve for x
    x = 104,574,097,782.85/311,921.57
  6. Step 6: Final answer
    x = 335,257.67

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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.