Home / 329,721.60-494,582.40-80,403.60

Finding the Fourth Proportional to 329,721.60, 494,582.40 and 80,403.60

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Solution

The fourth proportional to 329,721.60, 494,582.40 and 80,403.60 is: 120,605.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,721.60 : 494,582.40 = 80,403.60 : x
  2. Step 2: Convert to fraction form
    329,721.60/494,582.40 = 80,403.60/x
  3. Step 3: Cross multiply
    329,721.60x = 494,582.40 × 80,403.60
  4. Step 4: Simplify right side
    329,721.60x = 39,766,205,456.64
  5. Step 5: Solve for x
    x = 39,766,205,456.64/329,721.60
  6. Step 6: Final answer
    x = 120,605.40

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1.5x scale

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.