Home / 395,137.25-545,298.05-216,289.25

Finding the Fourth Proportional to 395,137.25, 545,298.05 and 216,289.25

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Solution

The fourth proportional to 395,137.25, 545,298.05 and 216,289.25 is: 298,483.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,137.25 : 545,298.05 = 216,289.25 : x
  2. Step 2: Convert to fraction form
    395,137.25/545,298.05 = 216,289.25/x
  3. Step 3: Cross multiply
    395,137.25x = 545,298.05 × 216,289.25
  4. Step 4: Simplify right side
    395,137.25x = 117,942,105,179.52
  5. Step 5: Solve for x
    x = 117,942,105,179.52/395,137.25
  6. Step 6: Final answer
    x = 298,483.89

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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.