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Finding the Fourth Proportional to 315,911.62, 435,957.92 and 179,958.16

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Solution

The fourth proportional to 315,911.62, 435,957.92 and 179,958.16 is: 248,342.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,911.62 : 435,957.92 = 179,958.16 : x
  2. Step 2: Convert to fraction form
    315,911.62/435,957.92 = 179,958.16/x
  3. Step 3: Cross multiply
    315,911.62x = 435,957.92 × 179,958.16
  4. Step 4: Simplify right side
    315,911.62x = 78,454,185,120.63
  5. Step 5: Solve for x
    x = 78,454,185,120.63/315,911.62
  6. Step 6: Final answer
    x = 248,342.19

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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.