Home / 414,019.20-621,028.80-147,788.40

Finding the Fourth Proportional to 414,019.20, 621,028.80 and 147,788.40

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Solution

The fourth proportional to 414,019.20, 621,028.80 and 147,788.40 is: 221,682.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,019.20 : 621,028.80 = 147,788.40 : x
  2. Step 2: Convert to fraction form
    414,019.20/621,028.80 = 147,788.40/x
  3. Step 3: Cross multiply
    414,019.20x = 621,028.80 × 147,788.40
  4. Step 4: Simplify right side
    414,019.20x = 91,780,852,705.92
  5. Step 5: Solve for x
    x = 91,780,852,705.92/414,019.20
  6. Step 6: Final answer
    x = 221,682.60

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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.