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Finding the Fourth Proportional to 228,450.80, 315,455.64 and 143,595.20

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Solution

The fourth proportional to 228,450.80, 315,455.64 and 143,595.20 is: 198,283.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,450.80 : 315,455.64 = 143,595.20 : x
  2. Step 2: Convert to fraction form
    228,450.80/315,455.64 = 143,595.20/x
  3. Step 3: Cross multiply
    228,450.80x = 315,455.64 × 143,595.20
  4. Step 4: Simplify right side
    228,450.80x = 45,297,915,716.93
  5. Step 5: Solve for x
    x = 45,297,915,716.93/228,450.80
  6. Step 6: Final answer
    x = 198,283.03

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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.