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Finding the Fourth Proportional to 351,136.77, 526,709.63 and 123,423.20

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Solution

The fourth proportional to 351,136.77, 526,709.63 and 123,423.20 is: 185,136.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,136.77 : 526,709.63 = 123,423.20 : x
  2. Step 2: Convert to fraction form
    351,136.77/526,709.63 = 123,423.20/x
  3. Step 3: Cross multiply
    351,136.77x = 526,709.63 × 123,423.20
  4. Step 4: Simplify right side
    351,136.77x = 65,008,188,005.42
  5. Step 5: Solve for x
    x = 65,008,188,005.42/351,136.77
  6. Step 6: Final answer
    x = 185,136.37

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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.