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Finding the Fourth Proportional to 340,491.73, 469,653.56 and 212,945.89

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Solution

The fourth proportional to 340,491.73, 469,653.56 and 212,945.89 is: 293,724.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,491.73 : 469,653.56 = 212,945.89 : x
  2. Step 2: Convert to fraction form
    340,491.73/469,653.56 = 212,945.89/x
  3. Step 3: Cross multiply
    340,491.73x = 469,653.56 × 212,945.89
  4. Step 4: Simplify right side
    340,491.73x = 100,010,793,509.97
  5. Step 5: Solve for x
    x = 100,010,793,509.97/340,491.73
  6. Step 6: Final answer
    x = 293,724.59

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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.