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Finding the Fourth Proportional to 218,685, 301,783.99 and 123,222.45

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Solution

The fourth proportional to 218,685, 301,783.99 and 123,222.45 is: 170,046.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,685 : 301,783.99 = 123,222.45 : x
  2. Step 2: Convert to fraction form
    218,685/301,783.99 = 123,222.45/x
  3. Step 3: Cross multiply
    218,685x = 301,783.99 × 123,222.45
  4. Step 4: Simplify right side
    218,685x = 37,186,562,618.58
  5. Step 5: Solve for x
    x = 37,186,562,618.58/218,685
  6. Step 6: Final answer
    x = 170,046.24

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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.