Home / 315,269.12-472,982.88-90,629.96

Finding the Fourth Proportional to 315,269.12, 472,982.88 and 90,629.96

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Solution

The fourth proportional to 315,269.12, 472,982.88 and 90,629.96 is: 135,967.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,269.12 : 472,982.88 = 90,629.96 : x
  2. Step 2: Convert to fraction form
    315,269.12/472,982.88 = 90,629.96/x
  3. Step 3: Cross multiply
    315,269.12x = 472,982.88 × 90,629.96
  4. Step 4: Simplify right side
    315,269.12x = 42,866,419,187.07
  5. Step 5: Solve for x
    x = 42,866,419,187.07/315,269.12
  6. Step 6: Final answer
    x = 135,967.71

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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.