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Finding the Fourth Proportional to 379,056.70, 568,394.90 and 126,248.31

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Solution

The fourth proportional to 379,056.70, 568,394.90 and 126,248.31 is: 189,309.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,056.70 : 568,394.90 = 126,248.31 : x
  2. Step 2: Convert to fraction form
    379,056.70/568,394.90 = 126,248.31/x
  3. Step 3: Cross multiply
    379,056.70x = 568,394.90 × 126,248.31
  4. Step 4: Simplify right side
    379,056.70x = 71,758,896,089.96
  5. Step 5: Solve for x
    x = 71,758,896,089.96/379,056.70
  6. Step 6: Final answer
    x = 189,309.13

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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.