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Finding the Fourth Proportional to 308,136.60, 462,642.30 and 190,038.60

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Solution

The fourth proportional to 308,136.60, 462,642.30 and 190,038.60 is: 285,327.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,136.60 : 462,642.30 = 190,038.60 : x
  2. Step 2: Convert to fraction form
    308,136.60/462,642.30 = 190,038.60/x
  3. Step 3: Cross multiply
    308,136.60x = 462,642.30 × 190,038.60
  4. Step 4: Simplify right side
    308,136.60x = 87,919,894,992.78
  5. Step 5: Solve for x
    x = 87,919,894,992.78/308,136.60
  6. Step 6: Final answer
    x = 285,327.66

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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.