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Finding the Fourth Proportional to 424,136.86, 636,658.50 and 171,582.44

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Solution

The fourth proportional to 424,136.86, 636,658.50 and 171,582.44 is: 257,557.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,136.86 : 636,658.50 = 171,582.44 : x
  2. Step 2: Convert to fraction form
    424,136.86/636,658.50 = 171,582.44/x
  3. Step 3: Cross multiply
    424,136.86x = 636,658.50 × 171,582.44
  4. Step 4: Simplify right side
    424,136.86x = 109,239,419,824.95
  5. Step 5: Solve for x
    x = 109,239,419,824.95/424,136.86
  6. Step 6: Final answer
    x = 257,557.01

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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.