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Finding the Fourth Proportional to 394,702.23, 591,913.62 and 128,413.11

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Solution

The fourth proportional to 394,702.23, 591,913.62 and 128,413.11 is: 192,574.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,702.23 : 591,913.62 = 128,413.11 : x
  2. Step 2: Convert to fraction form
    394,702.23/591,913.62 = 128,413.11/x
  3. Step 3: Cross multiply
    394,702.23x = 591,913.62 × 128,413.11
  4. Step 4: Simplify right side
    394,702.23x = 76,009,468,795.56
  5. Step 5: Solve for x
    x = 76,009,468,795.56/394,702.23
  6. Step 6: Final answer
    x = 192,574.21

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1.5x scale

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.