Home / 414,136.20-621,204.30-147,905.40

Finding the Fourth Proportional to 414,136.20, 621,204.30 and 147,905.40

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Solution

The fourth proportional to 414,136.20, 621,204.30 and 147,905.40 is: 221,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,136.20 : 621,204.30 = 147,905.40 : x
  2. Step 2: Convert to fraction form
    414,136.20/621,204.30 = 147,905.40/x
  3. Step 3: Cross multiply
    414,136.20x = 621,204.30 × 147,905.40
  4. Step 4: Simplify right side
    414,136.20x = 91,879,470,473.22
  5. Step 5: Solve for x
    x = 91,879,470,473.22/414,136.20
  6. Step 6: Final answer
    x = 221,858.10

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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.