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Finding the Fourth Proportional to 458,861.76, 633,440.86 and 275,187.78

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Solution

The fourth proportional to 458,861.76, 633,440.86 and 275,187.78 is: 379,886.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,861.76 : 633,440.86 = 275,187.78 : x
  2. Step 2: Convert to fraction form
    458,861.76/633,440.86 = 275,187.78/x
  3. Step 3: Cross multiply
    458,861.76x = 633,440.86 × 275,187.78
  4. Step 4: Simplify right side
    458,861.76x = 174,315,183,336.72
  5. Step 5: Solve for x
    x = 174,315,183,336.72/458,861.76
  6. Step 6: Final answer
    x = 379,886.05

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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.