Home / 389,042.21-536,867.55-216,965.41

Finding the Fourth Proportional to 389,042.21, 536,867.55 and 216,965.41

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Solution

The fourth proportional to 389,042.21, 536,867.55 and 216,965.41 is: 299,406.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,042.21 : 536,867.55 = 216,965.41 : x
  2. Step 2: Convert to fraction form
    389,042.21/536,867.55 = 216,965.41/x
  3. Step 3: Cross multiply
    389,042.21x = 536,867.55 × 216,965.41
  4. Step 4: Simplify right side
    389,042.21x = 116,481,686,759.28
  5. Step 5: Solve for x
    x = 116,481,686,759.28/389,042.21
  6. Step 6: Final answer
    x = 299,406.29

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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.