Home / 387,321.41-580,980.94-103,011.72

Finding the Fourth Proportional to 387,321.41, 580,980.94 and 103,011.72

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Solution

The fourth proportional to 387,321.41, 580,980.94 and 103,011.72 is: 154,517.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,321.41 : 580,980.94 = 103,011.72 : x
  2. Step 2: Convert to fraction form
    387,321.41/580,980.94 = 103,011.72/x
  3. Step 3: Cross multiply
    387,321.41x = 580,980.94 × 103,011.72
  4. Step 4: Simplify right side
    387,321.41x = 59,847,843,480.41
  5. Step 5: Solve for x
    x = 59,847,843,480.41/387,321.41
  6. Step 6: Final answer
    x = 154,517.26

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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.