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Finding the Fourth Proportional to 414,560.40, 621,840.60 and 148,448.40

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Solution

The fourth proportional to 414,560.40, 621,840.60 and 148,448.40 is: 222,672.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,560.40 : 621,840.60 = 148,448.40 : x
  2. Step 2: Convert to fraction form
    414,560.40/621,840.60 = 148,448.40/x
  3. Step 3: Cross multiply
    414,560.40x = 621,840.60 × 148,448.40
  4. Step 4: Simplify right side
    414,560.40x = 92,311,242,125.04
  5. Step 5: Solve for x
    x = 92,311,242,125.04/414,560.40
  6. Step 6: Final answer
    x = 222,672.60

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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.