Home / 315,087.20-472,701.30-115,403.60

Finding the Fourth Proportional to 315,087.20, 472,701.30 and 115,403.60

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Solution

The fourth proportional to 315,087.20, 472,701.30 and 115,403.60 is: 173,131.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,087.20 : 472,701.30 = 115,403.60 : x
  2. Step 2: Convert to fraction form
    315,087.20/472,701.30 = 115,403.60/x
  3. Step 3: Cross multiply
    315,087.20x = 472,701.30 × 115,403.60
  4. Step 4: Simplify right side
    315,087.20x = 54,551,431,744.68
  5. Step 5: Solve for x
    x = 54,551,431,744.68/315,087.20
  6. Step 6: Final answer
    x = 173,131.22

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1.5x scale

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.