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Finding the Fourth Proportional to 326,478.99, 489,663.05 and 148,944.27

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Solution

The fourth proportional to 326,478.99, 489,663.05 and 148,944.27 is: 223,391.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,478.99 : 489,663.05 = 148,944.27 : x
  2. Step 2: Convert to fraction form
    326,478.99/489,663.05 = 148,944.27/x
  3. Step 3: Cross multiply
    326,478.99x = 489,663.05 × 148,944.27
  4. Step 4: Simplify right side
    326,478.99x = 72,932,504,783.50
  5. Step 5: Solve for x
    x = 72,932,504,783.50/326,478.99
  6. Step 6: Final answer
    x = 223,391.11

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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.