Home / 414,121.20-621,181.80-147,890.40

Finding the Fourth Proportional to 414,121.20, 621,181.80 and 147,890.40

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Solution

The fourth proportional to 414,121.20, 621,181.80 and 147,890.40 is: 221,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,121.20 : 621,181.80 = 147,890.40 : x
  2. Step 2: Convert to fraction form
    414,121.20/621,181.80 = 147,890.40/x
  3. Step 3: Cross multiply
    414,121.20x = 621,181.80 × 147,890.40
  4. Step 4: Simplify right side
    414,121.20x = 91,866,824,874.72
  5. Step 5: Solve for x
    x = 91,866,824,874.72/414,121.20
  6. Step 6: Final answer
    x = 221,835.60

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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.