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Finding the Fourth Proportional to 326,048.70, 489,316.05 and 168,195.90

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Solution

The fourth proportional to 326,048.70, 489,316.05 and 168,195.90 is: 252,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,048.70 : 489,316.05 = 168,195.90 : x
  2. Step 2: Convert to fraction form
    326,048.70/489,316.05 = 168,195.90/x
  3. Step 3: Cross multiply
    326,048.70x = 489,316.05 × 168,195.90
  4. Step 4: Simplify right side
    326,048.70x = 82,300,953,414.20
  5. Step 5: Solve for x
    x = 82,300,953,414.20/326,048.70
  6. Step 6: Final answer
    x = 252,419.20

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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.