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Finding the Fourth Proportional to 354,660.54, 530,742.60 and 221,603.46

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Solution

The fourth proportional to 354,660.54, 530,742.60 and 221,603.46 is: 331,625.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,660.54 : 530,742.60 = 221,603.46 : x
  2. Step 2: Convert to fraction form
    354,660.54/530,742.60 = 221,603.46/x
  3. Step 3: Cross multiply
    354,660.54x = 530,742.60 × 221,603.46
  4. Step 4: Simplify right side
    354,660.54x = 117,614,396,529.40
  5. Step 5: Solve for x
    x = 117,614,396,529.40/354,660.54
  6. Step 6: Final answer
    x = 331,625.27

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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.