Home / 258,054.09-356,137.10-143,355.04

Finding the Fourth Proportional to 258,054.09, 356,137.10 and 143,355.04

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Solution

The fourth proportional to 258,054.09, 356,137.10 and 143,355.04 is: 197,842.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,054.09 : 356,137.10 = 143,355.04 : x
  2. Step 2: Convert to fraction form
    258,054.09/356,137.10 = 143,355.04/x
  3. Step 3: Cross multiply
    258,054.09x = 356,137.10 × 143,355.04
  4. Step 4: Simplify right side
    258,054.09x = 51,054,048,215.98
  5. Step 5: Solve for x
    x = 51,054,048,215.98/258,054.09
  6. Step 6: Final answer
    x = 197,842.43

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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.