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Finding the Fourth Proportional to 326,604.60, 489,780.94 and 126,898.69

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Solution

The fourth proportional to 326,604.60, 489,780.94 and 126,898.69 is: 190,299.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,604.60 : 489,780.94 = 126,898.69 : x
  2. Step 2: Convert to fraction form
    326,604.60/489,780.94 = 126,898.69/x
  3. Step 3: Cross multiply
    326,604.60x = 489,780.94 × 126,898.69
  4. Step 4: Simplify right side
    326,604.60x = 62,152,559,672.97
  5. Step 5: Solve for x
    x = 62,152,559,672.97/326,604.60
  6. Step 6: Final answer
    x = 190,299.09

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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.