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Finding the Fourth Proportional to 221,448.40, 333,047.40 and 198,703.60

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Solution

The fourth proportional to 221,448.40, 333,047.40 and 198,703.60 is: 298,840.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,448.40 : 333,047.40 = 198,703.60 : x
  2. Step 2: Convert to fraction form
    221,448.40/333,047.40 = 198,703.60/x
  3. Step 3: Cross multiply
    221,448.40x = 333,047.40 × 198,703.60
  4. Step 4: Simplify right side
    221,448.40x = 66,177,717,350.64
  5. Step 5: Solve for x
    x = 66,177,717,350.64/221,448.40
  6. Step 6: Final answer
    x = 298,840.35

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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.