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Finding the Fourth Proportional to 354,666.97, 530,752.26 and 221,609.89

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Solution

The fourth proportional to 354,666.97, 530,752.26 and 221,609.89 is: 331,634.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,666.97 : 530,752.26 = 221,609.89 : x
  2. Step 2: Convert to fraction form
    354,666.97/530,752.26 = 221,609.89/x
  3. Step 3: Cross multiply
    354,666.97x = 530,752.26 × 221,609.89
  4. Step 4: Simplify right side
    354,666.97x = 117,619,949,955.85
  5. Step 5: Solve for x
    x = 117,619,949,955.85/354,666.97
  6. Step 6: Final answer
    x = 331,634.91

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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.