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Finding the Fourth Proportional to 550,651.10, 759,910.21 and 308,951.15

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Solution

The fourth proportional to 550,651.10, 759,910.21 and 308,951.15 is: 426,359.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,651.10 : 759,910.21 = 308,951.15 : x
  2. Step 2: Convert to fraction form
    550,651.10/759,910.21 = 308,951.15/x
  3. Step 3: Cross multiply
    550,651.10x = 759,910.21 × 308,951.15
  4. Step 4: Simplify right side
    550,651.10x = 234,775,128,704.31
  5. Step 5: Solve for x
    x = 234,775,128,704.31/550,651.10
  6. Step 6: Final answer
    x = 426,359.14

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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.