Home / 221,719.80-332,579.70-209,472.60

Finding the Fourth Proportional to 221,719.80, 332,579.70 and 209,472.60

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Solution

The fourth proportional to 221,719.80, 332,579.70 and 209,472.60 is: 314,208.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,719.80 : 332,579.70 = 209,472.60 : x
  2. Step 2: Convert to fraction form
    221,719.80/332,579.70 = 209,472.60/x
  3. Step 3: Cross multiply
    221,719.80x = 332,579.70 × 209,472.60
  4. Step 4: Simplify right side
    221,719.80x = 69,666,334,466.22
  5. Step 5: Solve for x
    x = 69,666,334,466.22/221,719.80
  6. Step 6: Final answer
    x = 314,208.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.