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Finding the Fourth Proportional to 387,092.90, 580,413.36 and 150,158.72

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Solution

The fourth proportional to 387,092.90, 580,413.36 and 150,158.72 is: 225,150.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,092.90 : 580,413.36 = 150,158.72 : x
  2. Step 2: Convert to fraction form
    387,092.90/580,413.36 = 150,158.72/x
  3. Step 3: Cross multiply
    387,092.90x = 580,413.36 × 150,158.72
  4. Step 4: Simplify right side
    387,092.90x = 87,154,127,208.50
  5. Step 5: Solve for x
    x = 87,154,127,208.50/387,092.90
  6. Step 6: Final answer
    x = 225,150.42

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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.