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Finding the Fourth Proportional to 442,998.30, 664,497.45 and 265,413.90

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Solution

The fourth proportional to 442,998.30, 664,497.45 and 265,413.90 is: 398,120.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,998.30 : 664,497.45 = 265,413.90 : x
  2. Step 2: Convert to fraction form
    442,998.30/664,497.45 = 265,413.90/x
  3. Step 3: Cross multiply
    442,998.30x = 664,497.45 × 265,413.90
  4. Step 4: Simplify right side
    442,998.30x = 176,366,859,744.56
  5. Step 5: Solve for x
    x = 176,366,859,744.56/442,998.30
  6. Step 6: Final answer
    x = 398,120.85

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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.