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Finding the Fourth Proportional to 248,923.88, 343,505.80 and 135,744.20

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Solution

The fourth proportional to 248,923.88, 343,505.80 and 135,744.20 is: 187,322.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,923.88 : 343,505.80 = 135,744.20 : x
  2. Step 2: Convert to fraction form
    248,923.88/343,505.80 = 135,744.20/x
  3. Step 3: Cross multiply
    248,923.88x = 343,505.80 × 135,744.20
  4. Step 4: Simplify right side
    248,923.88x = 46,628,920,016.36
  5. Step 5: Solve for x
    x = 46,628,920,016.36/248,923.88
  6. Step 6: Final answer
    x = 187,322.00

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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.