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Finding the Fourth Proportional to 414,807.60, 622,211.40 and 115,287.60

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Solution

The fourth proportional to 414,807.60, 622,211.40 and 115,287.60 is: 172,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,807.60 : 622,211.40 = 115,287.60 : x
  2. Step 2: Convert to fraction form
    414,807.60/622,211.40 = 115,287.60/x
  3. Step 3: Cross multiply
    414,807.60x = 622,211.40 × 115,287.60
  4. Step 4: Simplify right side
    414,807.60x = 71,733,258,998.64
  5. Step 5: Solve for x
    x = 71,733,258,998.64/414,807.60
  6. Step 6: Final answer
    x = 172,931.40

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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.