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Finding the Fourth Proportional to 353,442.40, 530,163.60 and 269,461.60

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Solution

The fourth proportional to 353,442.40, 530,163.60 and 269,461.60 is: 404,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,442.40 : 530,163.60 = 269,461.60 : x
  2. Step 2: Convert to fraction form
    353,442.40/530,163.60 = 269,461.60/x
  3. Step 3: Cross multiply
    353,442.40x = 530,163.60 × 269,461.60
  4. Step 4: Simplify right side
    353,442.40x = 142,858,731,917.76
  5. Step 5: Solve for x
    x = 142,858,731,917.76/353,442.40
  6. Step 6: Final answer
    x = 404,192.40

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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.