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Finding the Fourth Proportional to 284,769.60, 427,024.80 and 126,916.80

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Solution

The fourth proportional to 284,769.60, 427,024.80 and 126,916.80 is: 190,317.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,769.60 : 427,024.80 = 126,916.80 : x
  2. Step 2: Convert to fraction form
    284,769.60/427,024.80 = 126,916.80/x
  3. Step 3: Cross multiply
    284,769.60x = 427,024.80 × 126,916.80
  4. Step 4: Simplify right side
    284,769.60x = 54,196,621,136.64
  5. Step 5: Solve for x
    x = 54,196,621,136.64/284,769.60
  6. Step 6: Final answer
    x = 190,317.44

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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.