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Finding the Fourth Proportional to 354,665.97, 530,750.76 and 221,608.89

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Solution

The fourth proportional to 354,665.97, 530,750.76 and 221,608.89 is: 331,633.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,665.97 : 530,750.76 = 221,608.89 : x
  2. Step 2: Convert to fraction form
    354,665.97/530,750.76 = 221,608.89/x
  3. Step 3: Cross multiply
    354,665.97x = 530,750.76 × 221,608.89
  4. Step 4: Simplify right side
    354,665.97x = 117,619,086,790.26
  5. Step 5: Solve for x
    x = 117,619,086,790.26/354,665.97
  6. Step 6: Final answer
    x = 331,633.41

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1.5x scale

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.