Home / 258,048.20-387,072.33-80,570.41

Finding the Fourth Proportional to 258,048.20, 387,072.33 and 80,570.41

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Solution

The fourth proportional to 258,048.20, 387,072.33 and 80,570.41 is: 120,855.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,048.20 : 387,072.33 = 80,570.41 : x
  2. Step 2: Convert to fraction form
    258,048.20/387,072.33 = 80,570.41/x
  3. Step 3: Cross multiply
    258,048.20x = 387,072.33 × 80,570.41
  4. Step 4: Simplify right side
    258,048.20x = 31,186,573,989.54
  5. Step 5: Solve for x
    x = 31,186,573,989.54/258,048.20
  6. Step 6: Final answer
    x = 120,855.62

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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.