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Finding the Fourth Proportional to 484,269.03, 726,403.55 and 217,979.91

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Solution

The fourth proportional to 484,269.03, 726,403.55 and 217,979.91 is: 326,969.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,269.03 : 726,403.55 = 217,979.91 : x
  2. Step 2: Convert to fraction form
    484,269.03/726,403.55 = 217,979.91/x
  3. Step 3: Cross multiply
    484,269.03x = 726,403.55 × 217,979.91
  4. Step 4: Simplify right side
    484,269.03x = 158,341,379,362.78
  5. Step 5: Solve for x
    x = 158,341,379,362.78/484,269.03
  6. Step 6: Final answer
    x = 326,969.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.