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Finding the Fourth Proportional to 458,921.10, 633,310.44 and 254,990.78

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Solution

The fourth proportional to 458,921.10, 633,310.44 and 254,990.78 is: 351,886.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,921.10 : 633,310.44 = 254,990.78 : x
  2. Step 2: Convert to fraction form
    458,921.10/633,310.44 = 254,990.78/x
  3. Step 3: Cross multiply
    458,921.10x = 633,310.44 × 254,990.78
  4. Step 4: Simplify right side
    458,921.10x = 161,488,323,077.74
  5. Step 5: Solve for x
    x = 161,488,323,077.74/458,921.10
  6. Step 6: Final answer
    x = 351,886.90

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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.