Home / 391,939.44-540,748.34-228,558.90

Finding the Fourth Proportional to 391,939.44, 540,748.34 and 228,558.90

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Solution

The fourth proportional to 391,939.44, 540,748.34 and 228,558.90 is: 315,336.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,939.44 : 540,748.34 = 228,558.90 : x
  2. Step 2: Convert to fraction form
    391,939.44/540,748.34 = 228,558.90/x
  3. Step 3: Cross multiply
    391,939.44x = 540,748.34 × 228,558.90
  4. Step 4: Simplify right side
    391,939.44x = 123,592,845,767.23
  5. Step 5: Solve for x
    x = 123,592,845,767.23/391,939.44
  6. Step 6: Final answer
    x = 315,336.59

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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.