Home / 391,844.80-540,739.83-219,762.73

Finding the Fourth Proportional to 391,844.80, 540,739.83 and 219,762.73

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Solution

The fourth proportional to 391,844.80, 540,739.83 and 219,762.73 is: 303,269.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,844.80 : 540,739.83 = 219,762.73 : x
  2. Step 2: Convert to fraction form
    391,844.80/540,739.83 = 219,762.73/x
  3. Step 3: Cross multiply
    391,844.80x = 540,739.83 × 219,762.73
  4. Step 4: Simplify right side
    391,844.80x = 118,834,461,260.54
  5. Step 5: Solve for x
    x = 118,834,461,260.54/391,844.80
  6. Step 6: Final answer
    x = 303,269.21

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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.