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Finding the Fourth Proportional to 368,136.72, 508,073.76 and 206,998.56

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Solution

The fourth proportional to 368,136.72, 508,073.76 and 206,998.56 is: 285,683.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,136.72 : 508,073.76 = 206,998.56 : x
  2. Step 2: Convert to fraction form
    368,136.72/508,073.76 = 206,998.56/x
  3. Step 3: Cross multiply
    368,136.72x = 508,073.76 × 206,998.56
  4. Step 4: Simplify right side
    368,136.72x = 105,170,536,693.79
  5. Step 5: Solve for x
    x = 105,170,536,693.79/368,136.72
  6. Step 6: Final answer
    x = 285,683.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.