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Finding the Fourth Proportional to 315,063.48, 434,770.28 and 179,078.52

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Solution

The fourth proportional to 315,063.48, 434,770.28 and 179,078.52 is: 247,118.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,063.48 : 434,770.28 = 179,078.52 : x
  2. Step 2: Convert to fraction form
    315,063.48/434,770.28 = 179,078.52/x
  3. Step 3: Cross multiply
    315,063.48x = 434,770.28 × 179,078.52
  4. Step 4: Simplify right side
    315,063.48x = 77,858,015,213.14
  5. Step 5: Solve for x
    x = 77,858,015,213.14/315,063.48
  6. Step 6: Final answer
    x = 247,118.51

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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.