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Finding the Fourth Proportional to 401,546.70, 601,680.29 and 211,999.41

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Solution

The fourth proportional to 401,546.70, 601,680.29 and 211,999.41 is: 317,661.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,546.70 : 601,680.29 = 211,999.41 : x
  2. Step 2: Convert to fraction form
    401,546.70/601,680.29 = 211,999.41/x
  3. Step 3: Cross multiply
    401,546.70x = 601,680.29 × 211,999.41
  4. Step 4: Simplify right side
    401,546.70x = 127,555,865,428.63
  5. Step 5: Solve for x
    x = 127,555,865,428.63/401,546.70
  6. Step 6: Final answer
    x = 317,661.35

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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.