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Finding the Fourth Proportional to 496,615.20, 744,922.80 and 122,638.20

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Solution

The fourth proportional to 496,615.20, 744,922.80 and 122,638.20 is: 183,957.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,615.20 : 744,922.80 = 122,638.20 : x
  2. Step 2: Convert to fraction form
    496,615.20/744,922.80 = 122,638.20/x
  3. Step 3: Cross multiply
    496,615.20x = 744,922.80 × 122,638.20
  4. Step 4: Simplify right side
    496,615.20x = 91,355,991,330.96
  5. Step 5: Solve for x
    x = 91,355,991,330.96/496,615.20
  6. Step 6: Final answer
    x = 183,957.30

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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.