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Finding the Fourth Proportional to 543,020.74, 814,662.79 and 163,918.82

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Solution

The fourth proportional to 543,020.74, 814,662.79 and 163,918.82 is: 245,917.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,020.74 : 814,662.79 = 163,918.82 : x
  2. Step 2: Convert to fraction form
    543,020.74/814,662.79 = 163,918.82/x
  3. Step 3: Cross multiply
    543,020.74x = 814,662.79 × 163,918.82
  4. Step 4: Simplify right side
    543,020.74x = 133,538,562,415.11
  5. Step 5: Solve for x
    x = 133,538,562,415.11/543,020.74
  6. Step 6: Final answer
    x = 245,917.98

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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.