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Finding the Fourth Proportional to 394,415.80, 590,943.30 and 183,621.40

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Solution

The fourth proportional to 394,415.80, 590,943.30 and 183,621.40 is: 275,115.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,415.80 : 590,943.30 = 183,621.40 : x
  2. Step 2: Convert to fraction form
    394,415.80/590,943.30 = 183,621.40/x
  3. Step 3: Cross multiply
    394,415.80x = 590,943.30 × 183,621.40
  4. Step 4: Simplify right side
    394,415.80x = 108,509,836,066.62
  5. Step 5: Solve for x
    x = 108,509,836,066.62/394,415.80
  6. Step 6: Final answer
    x = 275,115.34

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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.