Home / 258,102.35-356,238.12-143,420.32

Finding the Fourth Proportional to 258,102.35, 356,238.12 and 143,420.32

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Solution

The fourth proportional to 258,102.35, 356,238.12 and 143,420.32 is: 197,951.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,102.35 : 356,238.12 = 143,420.32 : x
  2. Step 2: Convert to fraction form
    258,102.35/356,238.12 = 143,420.32/x
  3. Step 3: Cross multiply
    258,102.35x = 356,238.12 × 143,420.32
  4. Step 4: Simplify right side
    258,102.35x = 51,091,782,668.31
  5. Step 5: Solve for x
    x = 51,091,782,668.31/258,102.35
  6. Step 6: Final answer
    x = 197,951.64

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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.