Home / 326,669.40-489,772.44-126,821.34

Finding the Fourth Proportional to 326,669.40, 489,772.44 and 126,821.34

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Solution

The fourth proportional to 326,669.40, 489,772.44 and 126,821.34 is: 190,142.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,669.40 : 489,772.44 = 126,821.34 : x
  2. Step 2: Convert to fraction form
    326,669.40/489,772.44 = 126,821.34/x
  3. Step 3: Cross multiply
    326,669.40x = 489,772.44 × 126,821.34
  4. Step 4: Simplify right side
    326,669.40x = 62,113,597,135.87
  5. Step 5: Solve for x
    x = 62,113,597,135.87/326,669.40
  6. Step 6: Final answer
    x = 190,142.07

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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.