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Finding the Fourth Proportional to 217,870.30, 325,930.65 and 188,613.10

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Solution

The fourth proportional to 217,870.30, 325,930.65 and 188,613.10 is: 282,162.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,870.30 : 325,930.65 = 188,613.10 : x
  2. Step 2: Convert to fraction form
    217,870.30/325,930.65 = 188,613.10/x
  3. Step 3: Cross multiply
    217,870.30x = 325,930.65 × 188,613.10
  4. Step 4: Simplify right side
    217,870.30x = 61,474,790,281.52
  5. Step 5: Solve for x
    x = 61,474,790,281.52/217,870.30
  6. Step 6: Final answer
    x = 282,162.32

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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.