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Finding the Fourth Proportional to 469,861.38, 648,413.55 and 255,003.30

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Solution

The fourth proportional to 469,861.38, 648,413.55 and 255,003.30 is: 351,907.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,861.38 : 648,413.55 = 255,003.30 : x
  2. Step 2: Convert to fraction form
    469,861.38/648,413.55 = 255,003.30/x
  3. Step 3: Cross multiply
    469,861.38x = 648,413.55 × 255,003.30
  4. Step 4: Simplify right side
    469,861.38x = 165,347,595,014.72
  5. Step 5: Solve for x
    x = 165,347,595,014.72/469,861.38
  6. Step 6: Final answer
    x = 351,907.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.