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Finding the Fourth Proportional to 414,807.50, 622,405.01 and 215,018.90

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Solution

The fourth proportional to 414,807.50, 622,405.01 and 215,018.90 is: 322,628.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,807.50 : 622,405.01 = 215,018.90 : x
  2. Step 2: Convert to fraction form
    414,807.50/622,405.01 = 215,018.90/x
  3. Step 3: Cross multiply
    414,807.50x = 622,405.01 × 215,018.90
  4. Step 4: Simplify right side
    414,807.50x = 133,828,836,417.57
  5. Step 5: Solve for x
    x = 133,828,836,417.57/414,807.50
  6. Step 6: Final answer
    x = 322,628.78

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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.