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Finding the Fourth Proportional to 323,928.80, 485,536.80 and 113,458.40

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Solution

The fourth proportional to 323,928.80, 485,536.80 and 113,458.40 is: 170,062.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,928.80 : 485,536.80 = 113,458.40 : x
  2. Step 2: Convert to fraction form
    323,928.80/485,536.80 = 113,458.40/x
  3. Step 3: Cross multiply
    323,928.80x = 485,536.80 × 113,458.40
  4. Step 4: Simplify right side
    323,928.80x = 55,088,228,469.12
  5. Step 5: Solve for x
    x = 55,088,228,469.12/323,928.80
  6. Step 6: Final answer
    x = 170,062.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.