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Finding the Fourth Proportional to 252,843.81, 348,934.55 and 145,413.78

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Solution

The fourth proportional to 252,843.81, 348,934.55 and 145,413.78 is: 200,676.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,843.81 : 348,934.55 = 145,413.78 : x
  2. Step 2: Convert to fraction form
    252,843.81/348,934.55 = 145,413.78/x
  3. Step 3: Cross multiply
    252,843.81x = 348,934.55 × 145,413.78
  4. Step 4: Simplify right side
    252,843.81x = 50,739,891,161.03
  5. Step 5: Solve for x
    x = 50,739,891,161.03/252,843.81
  6. Step 6: Final answer
    x = 200,676.82

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1.5x scale

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.