Home / 320,862.47-442,999.10-206,185.30

Finding the Fourth Proportional to 320,862.47, 442,999.10 and 206,185.30

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Solution

The fourth proportional to 320,862.47, 442,999.10 and 206,185.30 is: 284,669.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,862.47 : 442,999.10 = 206,185.30 : x
  2. Step 2: Convert to fraction form
    320,862.47/442,999.10 = 206,185.30/x
  3. Step 3: Cross multiply
    320,862.47x = 442,999.10 × 206,185.30
  4. Step 4: Simplify right side
    320,862.47x = 91,339,900,968.00
  5. Step 5: Solve for x
    x = 91,339,900,968.00/320,862.47
  6. Step 6: Final answer
    x = 284,669.95

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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.