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Finding the Fourth Proportional to 493,667.58, 740,530.08 and 138,709.26

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Solution

The fourth proportional to 493,667.58, 740,530.08 and 138,709.26 is: 208,071.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,667.58 : 740,530.08 = 138,709.26 : x
  2. Step 2: Convert to fraction form
    493,667.58/740,530.08 = 138,709.26/x
  3. Step 3: Cross multiply
    493,667.58x = 740,530.08 × 138,709.26
  4. Step 4: Simplify right side
    493,667.58x = 102,718,379,404.54
  5. Step 5: Solve for x
    x = 102,718,379,404.54/493,667.58
  6. Step 6: Final answer
    x = 208,071.96

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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.