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Finding the Fourth Proportional to 445,548.51, 668,323.79 and 313,020.41

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Solution

The fourth proportional to 445,548.51, 668,323.79 and 313,020.41 is: 469,531.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,548.51 : 668,323.79 = 313,020.41 : x
  2. Step 2: Convert to fraction form
    445,548.51/668,323.79 = 313,020.41/x
  3. Step 3: Cross multiply
    445,548.51x = 668,323.79 × 313,020.41
  4. Step 4: Simplify right side
    445,548.51x = 209,198,986,864.26
  5. Step 5: Solve for x
    x = 209,198,986,864.26/445,548.51
  6. Step 6: Final answer
    x = 469,531.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.