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Finding the Fourth Proportional to 368,127.20, 551,413.20 and 305,919.20

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Solution

The fourth proportional to 368,127.20, 551,413.20 and 305,919.20 is: 458,232.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,127.20 : 551,413.20 = 305,919.20 : x
  2. Step 2: Convert to fraction form
    368,127.20/551,413.20 = 305,919.20/x
  3. Step 3: Cross multiply
    368,127.20x = 551,413.20 × 305,919.20
  4. Step 4: Simplify right side
    368,127.20x = 168,687,885,013.44
  5. Step 5: Solve for x
    x = 168,687,885,013.44/368,127.20
  6. Step 6: Final answer
    x = 458,232.60

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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.