Home / 326,112.70-489,254.10-126,439.60

Finding the Fourth Proportional to 326,112.70, 489,254.10 and 126,439.60

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Solution

The fourth proportional to 326,112.70, 489,254.10 and 126,439.60 is: 189,692.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,112.70 : 489,254.10 = 126,439.60 : x
  2. Step 2: Convert to fraction form
    326,112.70/489,254.10 = 126,439.60/x
  3. Step 3: Cross multiply
    326,112.70x = 489,254.10 × 126,439.60
  4. Step 4: Simplify right side
    326,112.70x = 61,861,092,702.36
  5. Step 5: Solve for x
    x = 61,861,092,702.36/326,112.70
  6. Step 6: Final answer
    x = 189,692.38

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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.