Home / 257,736.39-355,678.12-143,015.49

Finding the Fourth Proportional to 257,736.39, 355,678.12 and 143,015.49

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Solution

The fourth proportional to 257,736.39, 355,678.12 and 143,015.49 is: 197,362.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,736.39 : 355,678.12 = 143,015.49 : x
  2. Step 2: Convert to fraction form
    257,736.39/355,678.12 = 143,015.49/x
  3. Step 3: Cross multiply
    257,736.39x = 355,678.12 × 143,015.49
  4. Step 4: Simplify right side
    257,736.39x = 50,867,480,614.08
  5. Step 5: Solve for x
    x = 50,867,480,614.08/257,736.39
  6. Step 6: Final answer
    x = 197,362.43

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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.