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Finding the Fourth Proportional to 315,052.52, 434,798.32 and 179,129.12

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Solution

The fourth proportional to 315,052.52, 434,798.32 and 179,129.12 is: 247,212.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,052.52 : 434,798.32 = 179,129.12 : x
  2. Step 2: Convert to fraction form
    315,052.52/434,798.32 = 179,129.12/x
  3. Step 3: Cross multiply
    315,052.52x = 434,798.32 × 179,129.12
  4. Step 4: Simplify right side
    315,052.52x = 77,885,040,439.08
  5. Step 5: Solve for x
    x = 77,885,040,439.08/315,052.52
  6. Step 6: Final answer
    x = 247,212.88

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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.