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Finding the Fourth Proportional to 315,174.15, 434,960.88 and 179,220.72

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Solution

The fourth proportional to 315,174.15, 434,960.88 and 179,220.72 is: 247,336.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,174.15 : 434,960.88 = 179,220.72 : x
  2. Step 2: Convert to fraction form
    315,174.15/434,960.88 = 179,220.72/x
  3. Step 3: Cross multiply
    315,174.15x = 434,960.88 × 179,220.72
  4. Step 4: Simplify right side
    315,174.15x = 77,954,002,085.43
  5. Step 5: Solve for x
    x = 77,954,002,085.43/315,174.15
  6. Step 6: Final answer
    x = 247,336.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.