Home / 258,141.38-356,236.53-143,420.18

Finding the Fourth Proportional to 258,141.38, 356,236.53 and 143,420.18

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Solution

The fourth proportional to 258,141.38, 356,236.53 and 143,420.18 is: 197,920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,141.38 : 356,236.53 = 143,420.18 : x
  2. Step 2: Convert to fraction form
    258,141.38/356,236.53 = 143,420.18/x
  3. Step 3: Cross multiply
    258,141.38x = 356,236.53 × 143,420.18
  4. Step 4: Simplify right side
    258,141.38x = 51,091,507,255.18
  5. Step 5: Solve for x
    x = 51,091,507,255.18/258,141.38
  6. Step 6: Final answer
    x = 197,920.64

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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.