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Finding the Fourth Proportional to 469,930.19, 648,504.31 and 255,070.30

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Solution

The fourth proportional to 469,930.19, 648,504.31 and 255,070.30 is: 351,997.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,930.19 : 648,504.31 = 255,070.30 : x
  2. Step 2: Convert to fraction form
    469,930.19/648,504.31 = 255,070.30/x
  3. Step 3: Cross multiply
    469,930.19x = 648,504.31 × 255,070.30
  4. Step 4: Simplify right side
    469,930.19x = 165,414,188,902.99
  5. Step 5: Solve for x
    x = 165,414,188,902.99/469,930.19
  6. Step 6: Final answer
    x = 351,997.37

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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.