Home / 257,945.09-355,964.90-143,223.94

Finding the Fourth Proportional to 257,945.09, 355,964.90 and 143,223.94

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Solution

The fourth proportional to 257,945.09, 355,964.90 and 143,223.94 is: 197,649.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,945.09 : 355,964.90 = 143,223.94 : x
  2. Step 2: Convert to fraction form
    257,945.09/355,964.90 = 143,223.94/x
  3. Step 3: Cross multiply
    257,945.09x = 355,964.90 × 143,223.94
  4. Step 4: Simplify right side
    257,945.09x = 50,982,696,416.99
  5. Step 5: Solve for x
    x = 50,982,696,416.99/257,945.09
  6. Step 6: Final answer
    x = 197,649.42

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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.