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Finding the Fourth Proportional to 508,122.72, 762,216.48 and 134,136

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Solution

The fourth proportional to 508,122.72, 762,216.48 and 134,136 is: 201,212.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,122.72 : 762,216.48 = 134,136 : x
  2. Step 2: Convert to fraction form
    508,122.72/762,216.48 = 134,136/x
  3. Step 3: Cross multiply
    508,122.72x = 762,216.48 × 134,136
  4. Step 4: Simplify right side
    508,122.72x = 102,240,669,761.28
  5. Step 5: Solve for x
    x = 102,240,669,761.28/508,122.72
  6. Step 6: Final answer
    x = 201,212.55

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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.