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Finding the Fourth Proportional to 485,878.67, 670,542.60 and 268,086.27

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Solution

The fourth proportional to 485,878.67, 670,542.60 and 268,086.27 is: 369,975.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,878.67 : 670,542.60 = 268,086.27 : x
  2. Step 2: Convert to fraction form
    485,878.67/670,542.60 = 268,086.27/x
  3. Step 3: Cross multiply
    485,878.67x = 670,542.60 × 268,086.27
  4. Step 4: Simplify right side
    485,878.67x = 179,763,264,510.10
  5. Step 5: Solve for x
    x = 179,763,264,510.10/485,878.67
  6. Step 6: Final answer
    x = 369,975.62

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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.