Home / 395,218.18-545,401.19-213,929.55

Finding the Fourth Proportional to 395,218.18, 545,401.19 and 213,929.55

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Solution

The fourth proportional to 395,218.18, 545,401.19 and 213,929.55 is: 295,222.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,218.18 : 545,401.19 = 213,929.55 : x
  2. Step 2: Convert to fraction form
    395,218.18/545,401.19 = 213,929.55/x
  3. Step 3: Cross multiply
    395,218.18x = 545,401.19 × 213,929.55
  4. Step 4: Simplify right side
    395,218.18x = 116,677,430,076.52
  5. Step 5: Solve for x
    x = 116,677,430,076.52/395,218.18
  6. Step 6: Final answer
    x = 295,222.83

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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.