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Finding the Fourth Proportional to 400,674.51, 552,928.79 and 219,383.15

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Solution

The fourth proportional to 400,674.51, 552,928.79 and 219,383.15 is: 302,747.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,674.51 : 552,928.79 = 219,383.15 : x
  2. Step 2: Convert to fraction form
    400,674.51/552,928.79 = 219,383.15/x
  3. Step 3: Cross multiply
    400,674.51x = 552,928.79 × 219,383.15
  4. Step 4: Simplify right side
    400,674.51x = 121,303,256,911.25
  5. Step 5: Solve for x
    x = 121,303,256,911.25/400,674.51
  6. Step 6: Final answer
    x = 302,747.63

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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.