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Finding the Fourth Proportional to 221,708.55, 332,562.83 and 209,461.35

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Solution

The fourth proportional to 221,708.55, 332,562.83 and 209,461.35 is: 314,192.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,708.55 : 332,562.83 = 209,461.35 : x
  2. Step 2: Convert to fraction form
    221,708.55/332,562.83 = 209,461.35/x
  3. Step 3: Cross multiply
    221,708.55x = 332,562.83 × 209,461.35
  4. Step 4: Simplify right side
    221,708.55x = 69,659,058,284.31
  5. Step 5: Solve for x
    x = 69,659,058,284.31/221,708.55
  6. Step 6: Final answer
    x = 314,192.03

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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.