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Finding the Fourth Proportional to 217,078.40, 325,617.60 and 117,545.60

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Solution

The fourth proportional to 217,078.40, 325,617.60 and 117,545.60 is: 176,318.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,078.40 : 325,617.60 = 117,545.60 : x
  2. Step 2: Convert to fraction form
    217,078.40/325,617.60 = 117,545.60/x
  3. Step 3: Cross multiply
    217,078.40x = 325,617.60 × 117,545.60
  4. Step 4: Simplify right side
    217,078.40x = 38,274,916,162.56
  5. Step 5: Solve for x
    x = 38,274,916,162.56/217,078.40
  6. Step 6: Final answer
    x = 176,318.40

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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.