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Finding the Fourth Proportional to 315,203.72, 434,979.02 and 179,237.68

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Solution

The fourth proportional to 315,203.72, 434,979.02 and 179,237.68 is: 247,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,203.72 : 434,979.02 = 179,237.68 : x
  2. Step 2: Convert to fraction form
    315,203.72/434,979.02 = 179,237.68/x
  3. Step 3: Cross multiply
    315,203.72x = 434,979.02 × 179,237.68
  4. Step 4: Simplify right side
    315,203.72x = 77,964,629,754.12
  5. Step 5: Solve for x
    x = 77,964,629,754.12/315,203.72
  6. Step 6: Final answer
    x = 247,346.80

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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.