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Finding the Fourth Proportional to 264,136.40, 397,079.40 and 225,645.20

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Solution

The fourth proportional to 264,136.40, 397,079.40 and 225,645.20 is: 339,215.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,136.40 : 397,079.40 = 225,645.20 : x
  2. Step 2: Convert to fraction form
    264,136.40/397,079.40 = 225,645.20/x
  3. Step 3: Cross multiply
    264,136.40x = 397,079.40 × 225,645.20
  4. Step 4: Simplify right side
    264,136.40x = 89,599,060,628.88
  5. Step 5: Solve for x
    x = 89,599,060,628.88/264,136.40
  6. Step 6: Final answer
    x = 339,215.12

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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.