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Finding the Fourth Proportional to 406,063.44, 609,159.96 and 139,758.12

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Solution

The fourth proportional to 406,063.44, 609,159.96 and 139,758.12 is: 209,659.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,063.44 : 609,159.96 = 139,758.12 : x
  2. Step 2: Convert to fraction form
    406,063.44/609,159.96 = 139,758.12/x
  3. Step 3: Cross multiply
    406,063.44x = 609,159.96 × 139,758.12
  4. Step 4: Simplify right side
    406,063.44x = 85,135,050,788.88
  5. Step 5: Solve for x
    x = 85,135,050,788.88/406,063.44
  6. Step 6: Final answer
    x = 209,659.48

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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.