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Finding the Fourth Proportional to 647,200.48, 970,710 and 273,136

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Solution

The fourth proportional to 647,200.48, 970,710 and 273,136 is: 409,665.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,200.48 : 970,710 = 273,136 : x
  2. Step 2: Convert to fraction form
    647,200.48/970,710 = 273,136/x
  3. Step 3: Cross multiply
    647,200.48x = 970,710 × 273,136
  4. Step 4: Simplify right side
    647,200.48x = 265,135,846,560
  5. Step 5: Solve for x
    x = 265,135,846,560/647,200.48
  6. Step 6: Final answer
    x = 409,665.71

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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.