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Finding the Fourth Proportional to 354,808, 489,655.02 and 203,914.72

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Solution

The fourth proportional to 354,808, 489,655.02 and 203,914.72 is: 281,413.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,808 : 489,655.02 = 203,914.72 : x
  2. Step 2: Convert to fraction form
    354,808/489,655.02 = 203,914.72/x
  3. Step 3: Cross multiply
    354,808x = 489,655.02 × 203,914.72
  4. Step 4: Simplify right side
    354,808x = 99,847,866,299.89
  5. Step 5: Solve for x
    x = 99,847,866,299.89/354,808
  6. Step 6: Final answer
    x = 281,413.80

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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.