Home / 257,738.12-355,661.52-143,009.49

Finding the Fourth Proportional to 257,738.12, 355,661.52 and 143,009.49

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Solution

The fourth proportional to 257,738.12, 355,661.52 and 143,009.49 is: 197,343.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,738.12 : 355,661.52 = 143,009.49 : x
  2. Step 2: Convert to fraction form
    257,738.12/355,661.52 = 143,009.49/x
  3. Step 3: Cross multiply
    257,738.12x = 355,661.52 × 143,009.49
  4. Step 4: Simplify right side
    257,738.12x = 50,862,972,587.82
  5. Step 5: Solve for x
    x = 50,862,972,587.82/257,738.12
  6. Step 6: Final answer
    x = 197,343.62

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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.