Home / 257,850.85-355,816.36-143,120.47

Finding the Fourth Proportional to 257,850.85, 355,816.36 and 143,120.47

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Solution

The fourth proportional to 257,850.85, 355,816.36 and 143,120.47 is: 197,496.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,850.85 : 355,816.36 = 143,120.47 : x
  2. Step 2: Convert to fraction form
    257,850.85/355,816.36 = 143,120.47/x
  3. Step 3: Cross multiply
    257,850.85x = 355,816.36 × 143,120.47
  4. Step 4: Simplify right side
    257,850.85x = 50,924,604,676.89
  5. Step 5: Solve for x
    x = 50,924,604,676.89/257,850.85
  6. Step 6: Final answer
    x = 197,496.36

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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.