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Finding the Fourth Proportional to 221,509.86, 332,269.50 and 79,364.40

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Solution

The fourth proportional to 221,509.86, 332,269.50 and 79,364.40 is: 119,048.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,509.86 : 332,269.50 = 79,364.40 : x
  2. Step 2: Convert to fraction form
    221,509.86/332,269.50 = 79,364.40/x
  3. Step 3: Cross multiply
    221,509.86x = 332,269.50 × 79,364.40
  4. Step 4: Simplify right side
    221,509.86x = 26,370,369,505.80
  5. Step 5: Solve for x
    x = 26,370,369,505.80/221,509.86
  6. Step 6: Final answer
    x = 119,048.29

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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.