Home / 319,028.09-440,289.77-238,315.41

Finding the Fourth Proportional to 319,028.09, 440,289.77 and 238,315.41

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Solution

The fourth proportional to 319,028.09, 440,289.77 and 238,315.41 is: 328,898.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,028.09 : 440,289.77 = 238,315.41 : x
  2. Step 2: Convert to fraction form
    319,028.09/440,289.77 = 238,315.41/x
  3. Step 3: Cross multiply
    319,028.09x = 440,289.77 × 238,315.41
  4. Step 4: Simplify right side
    319,028.09x = 104,927,835,864.78
  5. Step 5: Solve for x
    x = 104,927,835,864.78/319,028.09
  6. Step 6: Final answer
    x = 328,898.43

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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.