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Finding the Fourth Proportional to 424,288.02, 636,011.60 and 199,245.60

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Solution

The fourth proportional to 424,288.02, 636,011.60 and 199,245.60 is: 298,670.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,288.02 : 636,011.60 = 199,245.60 : x
  2. Step 2: Convert to fraction form
    424,288.02/636,011.60 = 199,245.60/x
  3. Step 3: Cross multiply
    424,288.02x = 636,011.60 × 199,245.60
  4. Step 4: Simplify right side
    424,288.02x = 126,722,512,848.96
  5. Step 5: Solve for x
    x = 126,722,512,848.96/424,288.02
  6. Step 6: Final answer
    x = 298,670.97

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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.