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Finding the Fourth Proportional to 415,247.01, 622,811.38 and 130,900.65

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Solution

The fourth proportional to 415,247.01, 622,811.38 and 130,900.65 is: 196,332.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,247.01 : 622,811.38 = 130,900.65 : x
  2. Step 2: Convert to fraction form
    415,247.01/622,811.38 = 130,900.65/x
  3. Step 3: Cross multiply
    415,247.01x = 622,811.38 × 130,900.65
  4. Step 4: Simplify right side
    415,247.01x = 81,526,410,700.84
  5. Step 5: Solve for x
    x = 81,526,410,700.84/415,247.01
  6. Step 6: Final answer
    x = 196,332.33

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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.