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Finding the Fourth Proportional to 221,633.86, 332,450.79 and 55,421.86

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Solution

The fourth proportional to 221,633.86, 332,450.79 and 55,421.86 is: 83,132.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,633.86 : 332,450.79 = 55,421.86 : x
  2. Step 2: Convert to fraction form
    221,633.86/332,450.79 = 55,421.86/x
  3. Step 3: Cross multiply
    221,633.86x = 332,450.79 × 55,421.86
  4. Step 4: Simplify right side
    221,633.86x = 18,425,041,140.27
  5. Step 5: Solve for x
    x = 18,425,041,140.27/221,633.86
  6. Step 6: Final answer
    x = 83,132.79

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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.