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Finding the Fourth Proportional to 216,509.14, 325,058.22 and 121,805.97

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Solution

The fourth proportional to 216,509.14, 325,058.22 and 121,805.97 is: 182,874.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,509.14 : 325,058.22 = 121,805.97 : x
  2. Step 2: Convert to fraction form
    216,509.14/325,058.22 = 121,805.97/x
  3. Step 3: Cross multiply
    216,509.14x = 325,058.22 × 121,805.97
  4. Step 4: Simplify right side
    216,509.14x = 39,594,030,574.61
  5. Step 5: Solve for x
    x = 39,594,030,574.61/216,509.14
  6. Step 6: Final answer
    x = 182,874.64

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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.