Home / 390,250.98-538,556.85-220,481.46

Finding the Fourth Proportional to 390,250.98, 538,556.85 and 220,481.46

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Solution

The fourth proportional to 390,250.98, 538,556.85 and 220,481.46 is: 304,270.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,250.98 : 538,556.85 = 220,481.46 : x
  2. Step 2: Convert to fraction form
    390,250.98/538,556.85 = 220,481.46/x
  3. Step 3: Cross multiply
    390,250.98x = 538,556.85 × 220,481.46
  4. Step 4: Simplify right side
    390,250.98x = 118,741,800,581.00
  5. Step 5: Solve for x
    x = 118,741,800,581.00/390,250.98
  6. Step 6: Final answer
    x = 304,270.35

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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.