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Finding the Fourth Proportional to 355,007.80, 489,913.48 and 202,057.73

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Solution

The fourth proportional to 355,007.80, 489,913.48 and 202,057.73 is: 278,841.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,007.80 : 489,913.48 = 202,057.73 : x
  2. Step 2: Convert to fraction form
    355,007.80/489,913.48 = 202,057.73/x
  3. Step 3: Cross multiply
    355,007.80x = 489,913.48 × 202,057.73
  4. Step 4: Simplify right side
    355,007.80x = 98,990,805,665.20
  5. Step 5: Solve for x
    x = 98,990,805,665.20/355,007.80
  6. Step 6: Final answer
    x = 278,841.21

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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.