Home / 391,799.28-540,645.23-219,724.30

Finding the Fourth Proportional to 391,799.28, 540,645.23 and 219,724.30

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Solution

The fourth proportional to 391,799.28, 540,645.23 and 219,724.30 is: 303,198.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,799.28 : 540,645.23 = 219,724.30 : x
  2. Step 2: Convert to fraction form
    391,799.28/540,645.23 = 219,724.30/x
  3. Step 3: Cross multiply
    391,799.28x = 540,645.23 × 219,724.30
  4. Step 4: Simplify right side
    391,799.28x = 118,792,892,894.08
  5. Step 5: Solve for x
    x = 118,792,892,894.08/391,799.28
  6. Step 6: Final answer
    x = 303,198.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.