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Finding the Fourth Proportional to 440,983.76, 661,413.36 and 141,425.42

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Solution

The fourth proportional to 440,983.76, 661,413.36 and 141,425.42 is: 212,118.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,983.76 : 661,413.36 = 141,425.42 : x
  2. Step 2: Convert to fraction form
    440,983.76/661,413.36 = 141,425.42/x
  3. Step 3: Cross multiply
    440,983.76x = 661,413.36 × 141,425.42
  4. Step 4: Simplify right side
    440,983.76x = 93,540,658,924.54
  5. Step 5: Solve for x
    x = 93,540,658,924.54/440,983.76
  6. Step 6: Final answer
    x = 212,118.15

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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.