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Finding the Fourth Proportional to 217,416.72, 325,960.62 and 142,555.68

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Solution

The fourth proportional to 217,416.72, 325,960.62 and 142,555.68 is: 213,725.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,416.72 : 325,960.62 = 142,555.68 : x
  2. Step 2: Convert to fraction form
    217,416.72/325,960.62 = 142,555.68/x
  3. Step 3: Cross multiply
    217,416.72x = 325,960.62 × 142,555.68
  4. Step 4: Simplify right side
    217,416.72x = 46,467,537,837.32
  5. Step 5: Solve for x
    x = 46,467,537,837.32/217,416.72
  6. Step 6: Final answer
    x = 213,725.69

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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.