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Finding the Fourth Proportional to 386,029.68, 579,702.24 and 251,323.20

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Solution

The fourth proportional to 386,029.68, 579,702.24 and 251,323.20 is: 377,413.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,029.68 : 579,702.24 = 251,323.20 : x
  2. Step 2: Convert to fraction form
    386,029.68/579,702.24 = 251,323.20/x
  3. Step 3: Cross multiply
    386,029.68x = 579,702.24 × 251,323.20
  4. Step 4: Simplify right side
    386,029.68x = 145,692,622,003.97
  5. Step 5: Solve for x
    x = 145,692,622,003.97/386,029.68
  6. Step 6: Final answer
    x = 377,413.01

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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.