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Finding the Fourth Proportional to 484,508.09, 668,621.17 and 269,698.90

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Solution

The fourth proportional to 484,508.09, 668,621.17 and 269,698.90 is: 372,184.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,508.09 : 668,621.17 = 269,698.90 : x
  2. Step 2: Convert to fraction form
    484,508.09/668,621.17 = 269,698.90/x
  3. Step 3: Cross multiply
    484,508.09x = 668,621.17 × 269,698.90
  4. Step 4: Simplify right side
    484,508.09x = 180,326,395,737.27
  5. Step 5: Solve for x
    x = 180,326,395,737.27/484,508.09
  6. Step 6: Final answer
    x = 372,184.49

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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.