Home / 391,875.09-540,787.77-222,110.43

Finding the Fourth Proportional to 391,875.09, 540,787.77 and 222,110.43

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Solution

The fourth proportional to 391,875.09, 540,787.77 and 222,110.43 is: 306,512.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,875.09 : 540,787.77 = 222,110.43 : x
  2. Step 2: Convert to fraction form
    391,875.09/540,787.77 = 222,110.43/x
  3. Step 3: Cross multiply
    391,875.09x = 540,787.77 × 222,110.43
  4. Step 4: Simplify right side
    391,875.09x = 120,114,604,133.44
  5. Step 5: Solve for x
    x = 120,114,604,133.44/391,875.09
  6. Step 6: Final answer
    x = 306,512.48

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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.