Home / 279,153.48-416,839.32-221,581.44

Finding the Fourth Proportional to 279,153.48, 416,839.32 and 221,581.44

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Solution

The fourth proportional to 279,153.48, 416,839.32 and 221,581.44 is: 330,871.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,153.48 : 416,839.32 = 221,581.44 : x
  2. Step 2: Convert to fraction form
    279,153.48/416,839.32 = 221,581.44/x
  3. Step 3: Cross multiply
    279,153.48x = 416,839.32 × 221,581.44
  4. Step 4: Simplify right side
    279,153.48x = 92,363,856,774.22
  5. Step 5: Solve for x
    x = 92,363,856,774.22/279,153.48
  6. Step 6: Final answer
    x = 330,871.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.