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Finding the Fourth Proportional to 391,733.42, 540,393.18 and 255,846.92

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Solution

The fourth proportional to 391,733.42, 540,393.18 and 255,846.92 is: 352,938.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,733.42 : 540,393.18 = 255,846.92 : x
  2. Step 2: Convert to fraction form
    391,733.42/540,393.18 = 255,846.92/x
  3. Step 3: Cross multiply
    391,733.42x = 540,393.18 × 255,846.92
  4. Step 4: Simplify right side
    391,733.42x = 138,257,930,692.01
  5. Step 5: Solve for x
    x = 138,257,930,692.01/391,733.42
  6. Step 6: Final answer
    x = 352,938.82

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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.