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Finding the Fourth Proportional to 408,583.95, 612,344.96 and 228,661.89

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Solution

The fourth proportional to 408,583.95, 612,344.96 and 228,661.89 is: 342,695.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,583.95 : 612,344.96 = 228,661.89 : x
  2. Step 2: Convert to fraction form
    408,583.95/612,344.96 = 228,661.89/x
  3. Step 3: Cross multiply
    408,583.95x = 612,344.96 × 228,661.89
  4. Step 4: Simplify right side
    408,583.95x = 140,019,955,885.57
  5. Step 5: Solve for x
    x = 140,019,955,885.57/408,583.95
  6. Step 6: Final answer
    x = 342,695.68

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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.