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Finding the Fourth Proportional to 319,074.60, 479,324.70 and 266,586.60

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Solution

The fourth proportional to 319,074.60, 479,324.70 and 266,586.60 is: 400,475.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,074.60 : 479,324.70 = 266,586.60 : x
  2. Step 2: Convert to fraction form
    319,074.60/479,324.70 = 266,586.60/x
  3. Step 3: Cross multiply
    319,074.60x = 479,324.70 × 266,586.60
  4. Step 4: Simplify right side
    319,074.60x = 127,781,542,069.02
  5. Step 5: Solve for x
    x = 127,781,542,069.02/319,074.60
  6. Step 6: Final answer
    x = 400,475.44

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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.