Home / 220,654.72-331,031.25-80,413.35

Finding the Fourth Proportional to 220,654.72, 331,031.25 and 80,413.35

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Solution

The fourth proportional to 220,654.72, 331,031.25 and 80,413.35 is: 120,637.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,654.72 : 331,031.25 = 80,413.35 : x
  2. Step 2: Convert to fraction form
    220,654.72/331,031.25 = 80,413.35/x
  3. Step 3: Cross multiply
    220,654.72x = 331,031.25 × 80,413.35
  4. Step 4: Simplify right side
    220,654.72x = 26,619,331,767.19
  5. Step 5: Solve for x
    x = 26,619,331,767.19/220,654.72
  6. Step 6: Final answer
    x = 120,637.94

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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.