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Finding the Fourth Proportional to 353,405.40, 530,108.10 and 269,424.60

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Solution

The fourth proportional to 353,405.40, 530,108.10 and 269,424.60 is: 404,136.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,405.40 : 530,108.10 = 269,424.60 : x
  2. Step 2: Convert to fraction form
    353,405.40/530,108.10 = 269,424.60/x
  3. Step 3: Cross multiply
    353,405.40x = 530,108.10 × 269,424.60
  4. Step 4: Simplify right side
    353,405.40x = 142,824,162,799.26
  5. Step 5: Solve for x
    x = 142,824,162,799.26/353,405.40
  6. Step 6: Final answer
    x = 404,136.90

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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.