Home / 388,976.80-583,413.36-108,470.56

Finding the Fourth Proportional to 388,976.80, 583,413.36 and 108,470.56

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Solution

The fourth proportional to 388,976.80, 583,413.36 and 108,470.56 is: 162,691.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,976.80 : 583,413.36 = 108,470.56 : x
  2. Step 2: Convert to fraction form
    388,976.80/583,413.36 = 108,470.56/x
  3. Step 3: Cross multiply
    388,976.80x = 583,413.36 × 108,470.56
  4. Step 4: Simplify right side
    388,976.80x = 63,283,173,870.68
  5. Step 5: Solve for x
    x = 63,283,173,870.68/388,976.80
  6. Step 6: Final answer
    x = 162,691.38

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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.