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Finding the Fourth Proportional to 391,450.46, 540,192.78 and 228,096.86

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Solution

The fourth proportional to 391,450.46, 540,192.78 and 228,096.86 is: 314,768.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,450.46 : 540,192.78 = 228,096.86 : x
  2. Step 2: Convert to fraction form
    391,450.46/540,192.78 = 228,096.86/x
  3. Step 3: Cross multiply
    391,450.46x = 540,192.78 × 228,096.86
  4. Step 4: Simplify right side
    391,450.46x = 123,216,274,211.71
  5. Step 5: Solve for x
    x = 123,216,274,211.71/391,450.46
  6. Step 6: Final answer
    x = 314,768.50

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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.