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Finding the Fourth Proportional to 326,066.20, 489,123.60 and 115,676.80

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Solution

The fourth proportional to 326,066.20, 489,123.60 and 115,676.80 is: 173,523.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,066.20 : 489,123.60 = 115,676.80 : x
  2. Step 2: Convert to fraction form
    326,066.20/489,123.60 = 115,676.80/x
  3. Step 3: Cross multiply
    326,066.20x = 489,123.60 × 115,676.80
  4. Step 4: Simplify right side
    326,066.20x = 56,580,252,852.48
  5. Step 5: Solve for x
    x = 56,580,252,852.48/326,066.20
  6. Step 6: Final answer
    x = 173,523.82

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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.