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Finding the Fourth Proportional to 221,883, 332,824.50 and 74,139

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Solution

The fourth proportional to 221,883, 332,824.50 and 74,139 is: 111,208.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,883 : 332,824.50 = 74,139 : x
  2. Step 2: Convert to fraction form
    221,883/332,824.50 = 74,139/x
  3. Step 3: Cross multiply
    221,883x = 332,824.50 × 74,139
  4. Step 4: Simplify right side
    221,883x = 24,675,275,605.50
  5. Step 5: Solve for x
    x = 24,675,275,605.50/221,883
  6. Step 6: Final answer
    x = 111,208.50

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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.