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Finding the Fourth Proportional to 251,608.80, 377,413.20 and 139,634.40

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Solution

The fourth proportional to 251,608.80, 377,413.20 and 139,634.40 is: 209,451.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,608.80 : 377,413.20 = 139,634.40 : x
  2. Step 2: Convert to fraction form
    251,608.80/377,413.20 = 139,634.40/x
  3. Step 3: Cross multiply
    251,608.80x = 377,413.20 × 139,634.40
  4. Step 4: Simplify right side
    251,608.80x = 52,699,865,734.08
  5. Step 5: Solve for x
    x = 52,699,865,734.08/251,608.80
  6. Step 6: Final answer
    x = 209,451.60

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1.5x scale

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.