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Finding the Fourth Proportional to 326,479.99, 489,664.55 and 148,945.27

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Solution

The fourth proportional to 326,479.99, 489,664.55 and 148,945.27 is: 223,392.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,479.99 : 489,664.55 = 148,945.27 : x
  2. Step 2: Convert to fraction form
    326,479.99/489,664.55 = 148,945.27/x
  3. Step 3: Cross multiply
    326,479.99x = 489,664.55 × 148,945.27
  4. Step 4: Simplify right side
    326,479.99x = 72,933,217,864.45
  5. Step 5: Solve for x
    x = 72,933,217,864.45/326,479.99
  6. Step 6: Final answer
    x = 223,392.61

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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.