Home / 218,972.80-328,232.40-118,921.60

Finding the Fourth Proportional to 218,972.80, 328,232.40 and 118,921.60

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Solution

The fourth proportional to 218,972.80, 328,232.40 and 118,921.60 is: 178,259.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,972.80 : 328,232.40 = 118,921.60 : x
  2. Step 2: Convert to fraction form
    218,972.80/328,232.40 = 118,921.60/x
  3. Step 3: Cross multiply
    218,972.80x = 328,232.40 × 118,921.60
  4. Step 4: Simplify right side
    218,972.80x = 39,033,922,179.84
  5. Step 5: Solve for x
    x = 39,033,922,179.84/218,972.80
  6. Step 6: Final answer
    x = 178,259.23

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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.