Home / 287,474.95-396,732.80-158,413.21

Finding the Fourth Proportional to 287,474.95, 396,732.80 and 158,413.21

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Solution

The fourth proportional to 287,474.95, 396,732.80 and 158,413.21 is: 218,619.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,474.95 : 396,732.80 = 158,413.21 : x
  2. Step 2: Convert to fraction form
    287,474.95/396,732.80 = 158,413.21/x
  3. Step 3: Cross multiply
    287,474.95x = 396,732.80 × 158,413.21
  4. Step 4: Simplify right side
    287,474.95x = 62,847,716,360.29
  5. Step 5: Solve for x
    x = 62,847,716,360.29/287,474.95
  6. Step 6: Final answer
    x = 218,619.80

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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.