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Finding the Fourth Proportional to 391,308.51, 540,449.24 and 263,764.83

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Solution

The fourth proportional to 391,308.51, 540,449.24 and 263,764.83 is: 364,294.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,308.51 : 540,449.24 = 263,764.83 : x
  2. Step 2: Convert to fraction form
    391,308.51/540,449.24 = 263,764.83/x
  3. Step 3: Cross multiply
    391,308.51x = 540,449.24 × 263,764.83
  4. Step 4: Simplify right side
    391,308.51x = 142,551,500,593.41
  5. Step 5: Solve for x
    x = 142,551,500,593.41/391,308.51
  6. Step 6: Final answer
    x = 364,294.40

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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.