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Finding the Fourth Proportional to 391,833.46, 540,729.69 and 228,496.55

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Solution

The fourth proportional to 391,833.46, 540,729.69 and 228,496.55 is: 315,324.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,833.46 : 540,729.69 = 228,496.55 : x
  2. Step 2: Convert to fraction form
    391,833.46/540,729.69 = 228,496.55/x
  3. Step 3: Cross multiply
    391,833.46x = 540,729.69 × 228,496.55
  4. Step 4: Simplify right side
    391,833.46x = 123,554,868,647.57
  5. Step 5: Solve for x
    x = 123,554,868,647.57/391,833.46
  6. Step 6: Final answer
    x = 315,324.96

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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.