Home / 326,461.10-489,035.55-220,172.90

Finding the Fourth Proportional to 326,461.10, 489,035.55 and 220,172.90

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Solution

The fourth proportional to 326,461.10, 489,035.55 and 220,172.90 is: 329,816.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,461.10 : 489,035.55 = 220,172.90 : x
  2. Step 2: Convert to fraction form
    326,461.10/489,035.55 = 220,172.90/x
  3. Step 3: Cross multiply
    326,461.10x = 489,035.55 × 220,172.90
  4. Step 4: Simplify right side
    326,461.10x = 107,672,375,246.60
  5. Step 5: Solve for x
    x = 107,672,375,246.60/326,461.10
  6. Step 6: Final answer
    x = 329,816.86

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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.