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Finding the Fourth Proportional to 401,960.70, 554,725.80 and 220,671.36

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Solution

The fourth proportional to 401,960.70, 554,725.80 and 220,671.36 is: 304,537.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,960.70 : 554,725.80 = 220,671.36 : x
  2. Step 2: Convert to fraction form
    401,960.70/554,725.80 = 220,671.36/x
  3. Step 3: Cross multiply
    401,960.70x = 554,725.80 × 220,671.36
  4. Step 4: Simplify right side
    401,960.70x = 122,412,096,713.09
  5. Step 5: Solve for x
    x = 122,412,096,713.09/401,960.70
  6. Step 6: Final answer
    x = 304,537.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.