Home / 316,999.41-436,723.97-221,354.61

Finding the Fourth Proportional to 316,999.41, 436,723.97 and 221,354.61

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Solution

The fourth proportional to 316,999.41, 436,723.97 and 221,354.61 is: 304,955.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,999.41 : 436,723.97 = 221,354.61 : x
  2. Step 2: Convert to fraction form
    316,999.41/436,723.97 = 221,354.61/x
  3. Step 3: Cross multiply
    316,999.41x = 436,723.97 × 221,354.61
  4. Step 4: Simplify right side
    316,999.41x = 96,670,862,950.23
  5. Step 5: Solve for x
    x = 96,670,862,950.23/316,999.41
  6. Step 6: Final answer
    x = 304,955.97

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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.