Home / 257,742.14-355,686.05-143,021.22

Finding the Fourth Proportional to 257,742.14, 355,686.05 and 143,021.22

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Solution

The fourth proportional to 257,742.14, 355,686.05 and 143,021.22 is: 197,370.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,742.14 : 355,686.05 = 143,021.22 : x
  2. Step 2: Convert to fraction form
    257,742.14/355,686.05 = 143,021.22/x
  3. Step 3: Cross multiply
    257,742.14x = 355,686.05 × 143,021.22
  4. Step 4: Simplify right side
    257,742.14x = 50,870,652,092.87
  5. Step 5: Solve for x
    x = 50,870,652,092.87/257,742.14
  6. Step 6: Final answer
    x = 197,370.34

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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.