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Finding the Fourth Proportional to 315,446.45, 435,310.34 and 179,477.42

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Solution

The fourth proportional to 315,446.45, 435,310.34 and 179,477.42 is: 247,675.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,446.45 : 435,310.34 = 179,477.42 : x
  2. Step 2: Convert to fraction form
    315,446.45/435,310.34 = 179,477.42/x
  3. Step 3: Cross multiply
    315,446.45x = 435,310.34 × 179,477.42
  4. Step 4: Simplify right side
    315,446.45x = 78,128,373,648.58
  5. Step 5: Solve for x
    x = 78,128,373,648.58/315,446.45
  6. Step 6: Final answer
    x = 247,675.56

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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.