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Finding the Fourth Proportional to 415,481.80, 623,136.30 and 178,832.20

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Solution

The fourth proportional to 415,481.80, 623,136.30 and 178,832.20 is: 268,211.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,481.80 : 623,136.30 = 178,832.20 : x
  2. Step 2: Convert to fraction form
    415,481.80/623,136.30 = 178,832.20/x
  3. Step 3: Cross multiply
    415,481.80x = 623,136.30 × 178,832.20
  4. Step 4: Simplify right side
    415,481.80x = 111,436,835,428.86
  5. Step 5: Solve for x
    x = 111,436,835,428.86/415,481.80
  6. Step 6: Final answer
    x = 268,211.11

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1.5x scale

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.