Home / 218,964.60-327,790.80-130,172.40

Finding the Fourth Proportional to 218,964.60, 327,790.80 and 130,172.40

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Solution

The fourth proportional to 218,964.60, 327,790.80 and 130,172.40 is: 194,868.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,964.60 : 327,790.80 = 130,172.40 : x
  2. Step 2: Convert to fraction form
    218,964.60/327,790.80 = 130,172.40/x
  3. Step 3: Cross multiply
    218,964.60x = 327,790.80 × 130,172.40
  4. Step 4: Simplify right side
    218,964.60x = 42,669,315,133.92
  5. Step 5: Solve for x
    x = 42,669,315,133.92/218,964.60
  6. Step 6: Final answer
    x = 194,868.55

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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.