Home / 395,288.18-545,493.90-213,995.36

Finding the Fourth Proportional to 395,288.18, 545,493.90 and 213,995.36

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Solution

The fourth proportional to 395,288.18, 545,493.90 and 213,995.36 is: 295,311.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,288.18 : 545,493.90 = 213,995.36 : x
  2. Step 2: Convert to fraction form
    395,288.18/545,493.90 = 213,995.36/x
  3. Step 3: Cross multiply
    395,288.18x = 545,493.90 × 213,995.36
  4. Step 4: Simplify right side
    395,288.18x = 116,733,163,508.30
  5. Step 5: Solve for x
    x = 116,733,163,508.30/395,288.18
  6. Step 6: Final answer
    x = 295,311.55

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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.