Home / 217,087.10-325,630.65-128,440.70

Finding the Fourth Proportional to 217,087.10, 325,630.65 and 128,440.70

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Solution

The fourth proportional to 217,087.10, 325,630.65 and 128,440.70 is: 192,661.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,087.10 : 325,630.65 = 128,440.70 : x
  2. Step 2: Convert to fraction form
    217,087.10/325,630.65 = 128,440.70/x
  3. Step 3: Cross multiply
    217,087.10x = 325,630.65 × 128,440.70
  4. Step 4: Simplify right side
    217,087.10x = 41,824,228,627.46
  5. Step 5: Solve for x
    x = 41,824,228,627.46/217,087.10
  6. Step 6: Final answer
    x = 192,661.05

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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.