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Finding the Fourth Proportional to 216,983.30, 325,426.35 and 142,625.30

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Solution

The fourth proportional to 216,983.30, 325,426.35 and 142,625.30 is: 213,906.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,983.30 : 325,426.35 = 142,625.30 : x
  2. Step 2: Convert to fraction form
    216,983.30/325,426.35 = 142,625.30/x
  3. Step 3: Cross multiply
    216,983.30x = 325,426.35 × 142,625.30
  4. Step 4: Simplify right side
    216,983.30x = 46,414,030,796.66
  5. Step 5: Solve for x
    x = 46,414,030,796.66/216,983.30
  6. Step 6: Final answer
    x = 213,906.00

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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.