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Finding the Fourth Proportional to 315,405.36, 435,221.10 and 179,456.58

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Solution

The fourth proportional to 315,405.36, 435,221.10 and 179,456.58 is: 247,628.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,405.36 : 435,221.10 = 179,456.58 : x
  2. Step 2: Convert to fraction form
    315,405.36/435,221.10 = 179,456.58/x
  3. Step 3: Cross multiply
    315,405.36x = 435,221.10 × 179,456.58
  4. Step 4: Simplify right side
    315,405.36x = 78,103,290,149.84
  5. Step 5: Solve for x
    x = 78,103,290,149.84/315,405.36
  6. Step 6: Final answer
    x = 247,628.29

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1.5x scale

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.