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Finding the Fourth Proportional to 270,930.96, 406,248.30 and 215,129.52

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Solution

The fourth proportional to 270,930.96, 406,248.30 and 215,129.52 is: 322,576.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,930.96 : 406,248.30 = 215,129.52 : x
  2. Step 2: Convert to fraction form
    270,930.96/406,248.30 = 215,129.52/x
  3. Step 3: Cross multiply
    270,930.96x = 406,248.30 × 215,129.52
  4. Step 4: Simplify right side
    270,930.96x = 87,396,001,779.82
  5. Step 5: Solve for x
    x = 87,396,001,779.82/270,930.96
  6. Step 6: Final answer
    x = 322,576.65

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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.