Home / 361,821.12-498,736.40-285,215.37

Finding the Fourth Proportional to 361,821.12, 498,736.40 and 285,215.37

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Solution

The fourth proportional to 361,821.12, 498,736.40 and 285,215.37 is: 393,142.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,821.12 : 498,736.40 = 285,215.37 : x
  2. Step 2: Convert to fraction form
    361,821.12/498,736.40 = 285,215.37/x
  3. Step 3: Cross multiply
    361,821.12x = 498,736.40 × 285,215.37
  4. Step 4: Simplify right side
    361,821.12x = 142,247,286,858.47
  5. Step 5: Solve for x
    x = 142,247,286,858.47/361,821.12
  6. Step 6: Final answer
    x = 393,142.58

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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.