Home / 258,278.14-356,406.54-143,549.34

Finding the Fourth Proportional to 258,278.14, 356,406.54 and 143,549.34

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Solution

The fourth proportional to 258,278.14, 356,406.54 and 143,549.34 is: 198,088.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,278.14 : 356,406.54 = 143,549.34 : x
  2. Step 2: Convert to fraction form
    258,278.14/356,406.54 = 143,549.34/x
  3. Step 3: Cross multiply
    258,278.14x = 356,406.54 × 143,549.34
  4. Step 4: Simplify right side
    258,278.14x = 51,161,923,588.68
  5. Step 5: Solve for x
    x = 51,161,923,588.68/258,278.14
  6. Step 6: Final answer
    x = 198,088.48

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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.