Home / 217,285.23-299,867.47-121,791.94

Finding the Fourth Proportional to 217,285.23, 299,867.47 and 121,791.94

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Solution

The fourth proportional to 217,285.23, 299,867.47 and 121,791.94 is: 168,080.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,285.23 : 299,867.47 = 121,791.94 : x
  2. Step 2: Convert to fraction form
    217,285.23/299,867.47 = 121,791.94/x
  3. Step 3: Cross multiply
    217,285.23x = 299,867.47 × 121,791.94
  4. Step 4: Simplify right side
    217,285.23x = 36,521,439,860.04
  5. Step 5: Solve for x
    x = 36,521,439,860.04/217,285.23
  6. Step 6: Final answer
    x = 168,080.63

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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.