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Finding the Fourth Proportional to 353,298.80, 529,948.20 and 274,469.60

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Solution

The fourth proportional to 353,298.80, 529,948.20 and 274,469.60 is: 411,704.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,298.80 : 529,948.20 = 274,469.60 : x
  2. Step 2: Convert to fraction form
    353,298.80/529,948.20 = 274,469.60/x
  3. Step 3: Cross multiply
    353,298.80x = 529,948.20 × 274,469.60
  4. Step 4: Simplify right side
    353,298.80x = 145,454,670,474.72
  5. Step 5: Solve for x
    x = 145,454,670,474.72/353,298.80
  6. Step 6: Final answer
    x = 411,704.40

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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.