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Finding the Fourth Proportional to 438,672.80, 658,009.20 and 123,183.20

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Solution

The fourth proportional to 438,672.80, 658,009.20 and 123,183.20 is: 184,774.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,672.80 : 658,009.20 = 123,183.20 : x
  2. Step 2: Convert to fraction form
    438,672.80/658,009.20 = 123,183.20/x
  3. Step 3: Cross multiply
    438,672.80x = 658,009.20 × 123,183.20
  4. Step 4: Simplify right side
    438,672.80x = 81,055,678,885.44
  5. Step 5: Solve for x
    x = 81,055,678,885.44/438,672.80
  6. Step 6: Final answer
    x = 184,774.80

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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.