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Finding the Fourth Proportional to 403,674.12, 557,028.48 and 248,600.88

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Solution

The fourth proportional to 403,674.12, 557,028.48 and 248,600.88 is: 343,043.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,674.12 : 557,028.48 = 248,600.88 : x
  2. Step 2: Convert to fraction form
    403,674.12/557,028.48 = 248,600.88/x
  3. Step 3: Cross multiply
    403,674.12x = 557,028.48 × 248,600.88
  4. Step 4: Simplify right side
    403,674.12x = 138,477,770,313.06
  5. Step 5: Solve for x
    x = 138,477,770,313.06/403,674.12
  6. Step 6: Final answer
    x = 343,043.47

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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.