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Finding the Fourth Proportional to 315,274.57, 472,824.32 and 87,517.86

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Solution

The fourth proportional to 315,274.57, 472,824.32 and 87,517.86 is: 131,252.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,274.57 : 472,824.32 = 87,517.86 : x
  2. Step 2: Convert to fraction form
    315,274.57/472,824.32 = 87,517.86/x
  3. Step 3: Cross multiply
    315,274.57x = 472,824.32 × 87,517.86
  4. Step 4: Simplify right side
    315,274.57x = 41,380,572,642.36
  5. Step 5: Solve for x
    x = 41,380,572,642.36/315,274.57
  6. Step 6: Final answer
    x = 131,252.49

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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.