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Finding the Fourth Proportional to 315,398.43, 435,234.63 and 179,419.58

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Solution

The fourth proportional to 315,398.43, 435,234.63 and 179,419.58 is: 247,590.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,398.43 : 435,234.63 = 179,419.58 : x
  2. Step 2: Convert to fraction form
    315,398.43/435,234.63 = 179,419.58/x
  3. Step 3: Cross multiply
    315,398.43x = 435,234.63 × 179,419.58
  4. Step 4: Simplify right side
    315,398.43x = 78,089,613,299.19
  5. Step 5: Solve for x
    x = 78,089,613,299.19/315,398.43
  6. Step 6: Final answer
    x = 247,590.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.