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Finding the Fourth Proportional to 414,362.40, 622,004.40 and 256,768.80

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Solution

The fourth proportional to 414,362.40, 622,004.40 and 256,768.80 is: 385,438.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,362.40 : 622,004.40 = 256,768.80 : x
  2. Step 2: Convert to fraction form
    414,362.40/622,004.40 = 256,768.80/x
  3. Step 3: Cross multiply
    414,362.40x = 622,004.40 × 256,768.80
  4. Step 4: Simplify right side
    414,362.40x = 159,711,323,382.72
  5. Step 5: Solve for x
    x = 159,711,323,382.72/414,362.40
  6. Step 6: Final answer
    x = 385,438.74

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1.5x scale

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.