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Finding the Fourth Proportional to 217,023.76, 325,585.32 and 83,905.12

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Solution

The fourth proportional to 217,023.76, 325,585.32 and 83,905.12 is: 125,876.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,023.76 : 325,585.32 = 83,905.12 : x
  2. Step 2: Convert to fraction form
    217,023.76/325,585.32 = 83,905.12/x
  3. Step 3: Cross multiply
    217,023.76x = 325,585.32 × 83,905.12
  4. Step 4: Simplify right side
    217,023.76x = 27,318,275,344.84
  5. Step 5: Solve for x
    x = 27,318,275,344.84/217,023.76
  6. Step 6: Final answer
    x = 125,876.89

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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.