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Finding the Fourth Proportional to 217,458.16, 325,815.28 and 170,055.12

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Solution

The fourth proportional to 217,458.16, 325,815.28 and 170,055.12 is: 254,791.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,458.16 : 325,815.28 = 170,055.12 : x
  2. Step 2: Convert to fraction form
    217,458.16/325,815.28 = 170,055.12/x
  3. Step 3: Cross multiply
    217,458.16x = 325,815.28 × 170,055.12
  4. Step 4: Simplify right side
    217,458.16x = 55,406,556,538.23
  5. Step 5: Solve for x
    x = 55,406,556,538.23/217,458.16
  6. Step 6: Final answer
    x = 254,791.80

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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.