Home / 419,413.48-578,769.98-238,101.61

Finding the Fourth Proportional to 419,413.48, 578,769.98 and 238,101.61

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Solution

The fourth proportional to 419,413.48, 578,769.98 and 238,101.61 is: 328,568.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,413.48 : 578,769.98 = 238,101.61 : x
  2. Step 2: Convert to fraction form
    419,413.48/578,769.98 = 238,101.61/x
  3. Step 3: Cross multiply
    419,413.48x = 578,769.98 × 238,101.61
  4. Step 4: Simplify right side
    419,413.48x = 137,806,062,867.16
  5. Step 5: Solve for x
    x = 137,806,062,867.16/419,413.48
  6. Step 6: Final answer
    x = 328,568.51

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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.