Home / 258,039.43-356,082.30-143,325.51

Finding the Fourth Proportional to 258,039.43, 356,082.30 and 143,325.51

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Solution

The fourth proportional to 258,039.43, 356,082.30 and 143,325.51 is: 197,782.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,039.43 : 356,082.30 = 143,325.51 : x
  2. Step 2: Convert to fraction form
    258,039.43/356,082.30 = 143,325.51/x
  3. Step 3: Cross multiply
    258,039.43x = 356,082.30 × 143,325.51
  4. Step 4: Simplify right side
    258,039.43x = 51,035,677,249.47
  5. Step 5: Solve for x
    x = 51,035,677,249.47/258,039.43
  6. Step 6: Final answer
    x = 197,782.48

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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.