Home / 258,108.81-356,178.57-143,395.48

Finding the Fourth Proportional to 258,108.81, 356,178.57 and 143,395.48

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Solution

The fourth proportional to 258,108.81, 356,178.57 and 143,395.48 is: 197,879.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,108.81 : 356,178.57 = 143,395.48 : x
  2. Step 2: Convert to fraction form
    258,108.81/356,178.57 = 143,395.48/x
  3. Step 3: Cross multiply
    258,108.81x = 356,178.57 × 143,395.48
  4. Step 4: Simplify right side
    258,108.81x = 51,074,397,010.86
  5. Step 5: Solve for x
    x = 51,074,397,010.86/258,108.81
  6. Step 6: Final answer
    x = 197,879.32

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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.