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Finding the Fourth Proportional to 391,613.58, 540,464.94 and 219,560.94

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Solution

The fourth proportional to 391,613.58, 540,464.94 and 219,560.94 is: 303,015.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,613.58 : 540,464.94 = 219,560.94 : x
  2. Step 2: Convert to fraction form
    391,613.58/540,464.94 = 219,560.94/x
  3. Step 3: Cross multiply
    391,613.58x = 540,464.94 × 219,560.94
  4. Step 4: Simplify right side
    391,613.58x = 118,664,990,263.44
  5. Step 5: Solve for x
    x = 118,664,990,263.44/391,613.58
  6. Step 6: Final answer
    x = 303,015.51

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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.