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Finding the Fourth Proportional to 415,157.09, 622,932.45 and 247,009.59

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Solution

The fourth proportional to 415,157.09, 622,932.45 and 247,009.59 is: 370,631.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,157.09 : 622,932.45 = 247,009.59 : x
  2. Step 2: Convert to fraction form
    415,157.09/622,932.45 = 247,009.59/x
  3. Step 3: Cross multiply
    415,157.09x = 622,932.45 × 247,009.59
  4. Step 4: Simplify right side
    415,157.09x = 153,870,289,072.20
  5. Step 5: Solve for x
    x = 153,870,289,072.20/415,157.09
  6. Step 6: Final answer
    x = 370,631.49

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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.