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Finding the Fourth Proportional to 321,293.71, 481,945.69 and 121,560.47

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Solution

The fourth proportional to 321,293.71, 481,945.69 and 121,560.47 is: 182,342.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,293.71 : 481,945.69 = 121,560.47 : x
  2. Step 2: Convert to fraction form
    321,293.71/481,945.69 = 121,560.47/x
  3. Step 3: Cross multiply
    321,293.71x = 481,945.69 × 121,560.47
  4. Step 4: Simplify right side
    321,293.71x = 58,585,545,153.98
  5. Step 5: Solve for x
    x = 58,585,545,153.98/321,293.71
  6. Step 6: Final answer
    x = 182,342.64

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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.