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Finding the Fourth Proportional to 208,130.80, 311,758.80 and 173,138.80

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Solution

The fourth proportional to 208,130.80, 311,758.80 and 173,138.80 is: 259,344.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,130.80 : 311,758.80 = 173,138.80 : x
  2. Step 2: Convert to fraction form
    208,130.80/311,758.80 = 173,138.80/x
  3. Step 3: Cross multiply
    208,130.80x = 311,758.80 × 173,138.80
  4. Step 4: Simplify right side
    208,130.80x = 53,977,544,521.44
  5. Step 5: Solve for x
    x = 53,977,544,521.44/208,130.80
  6. Step 6: Final answer
    x = 259,344.34

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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.