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Finding the Fourth Proportional to 485,980.14, 670,651.61 and 271,107.39

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Solution

The fourth proportional to 485,980.14, 670,651.61 and 271,107.39 is: 374,127.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,980.14 : 670,651.61 = 271,107.39 : x
  2. Step 2: Convert to fraction form
    485,980.14/670,651.61 = 271,107.39/x
  3. Step 3: Cross multiply
    485,980.14x = 670,651.61 × 271,107.39
  4. Step 4: Simplify right side
    485,980.14x = 181,818,607,586.40
  5. Step 5: Solve for x
    x = 181,818,607,586.40/485,980.14
  6. Step 6: Final answer
    x = 374,127.65

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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.