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Finding the Fourth Proportional to 245,282.61, 338,413.92 and 143,234.46

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Solution

The fourth proportional to 245,282.61, 338,413.92 and 143,234.46 is: 197,619.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,282.61 : 338,413.92 = 143,234.46 : x
  2. Step 2: Convert to fraction form
    245,282.61/338,413.92 = 143,234.46/x
  3. Step 3: Cross multiply
    245,282.61x = 338,413.92 × 143,234.46
  4. Step 4: Simplify right side
    245,282.61x = 48,472,535,087.68
  5. Step 5: Solve for x
    x = 48,472,535,087.68/245,282.61
  6. Step 6: Final answer
    x = 197,619.13

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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.