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Finding the Fourth Proportional to 456,811.23, 630,391.87 and 252,857.78

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Solution

The fourth proportional to 456,811.23, 630,391.87 and 252,857.78 is: 348,939.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,811.23 : 630,391.87 = 252,857.78 : x
  2. Step 2: Convert to fraction form
    456,811.23/630,391.87 = 252,857.78/x
  3. Step 3: Cross multiply
    456,811.23x = 630,391.87 × 252,857.78
  4. Step 4: Simplify right side
    456,811.23x = 159,399,488,705.75
  5. Step 5: Solve for x
    x = 159,399,488,705.75/456,811.23
  6. Step 6: Final answer
    x = 348,939.51

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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.