Home / 305,142.41-457,661.36-80,505.15

Finding the Fourth Proportional to 305,142.41, 457,661.36 and 80,505.15

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Solution

The fourth proportional to 305,142.41, 457,661.36 and 80,505.15 is: 120,743.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,142.41 : 457,661.36 = 80,505.15 : x
  2. Step 2: Convert to fraction form
    305,142.41/457,661.36 = 80,505.15/x
  3. Step 3: Cross multiply
    305,142.41x = 457,661.36 × 80,505.15
  4. Step 4: Simplify right side
    305,142.41x = 36,844,096,033.48
  5. Step 5: Solve for x
    x = 36,844,096,033.48/305,142.41
  6. Step 6: Final answer
    x = 120,743.94

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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.