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Finding the Fourth Proportional to 311,627.70, 466,785.45 and 259,139.70

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Solution

The fourth proportional to 311,627.70, 466,785.45 and 259,139.70 is: 388,163.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,627.70 : 466,785.45 = 259,139.70 : x
  2. Step 2: Convert to fraction form
    311,627.70/466,785.45 = 259,139.70/x
  3. Step 3: Cross multiply
    311,627.70x = 466,785.45 × 259,139.70
  4. Step 4: Simplify right side
    311,627.70x = 120,962,641,477.37
  5. Step 5: Solve for x
    x = 120,962,641,477.37/311,627.70
  6. Step 6: Final answer
    x = 388,163.96

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1.5x scale

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.