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Finding the Fourth Proportional to 325,826.80, 488,383.80 and 115,356.40

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Solution

The fourth proportional to 325,826.80, 488,383.80 and 115,356.40 is: 172,908.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,826.80 : 488,383.80 = 115,356.40 : x
  2. Step 2: Convert to fraction form
    325,826.80/488,383.80 = 115,356.40/x
  3. Step 3: Cross multiply
    325,826.80x = 488,383.80 × 115,356.40
  4. Step 4: Simplify right side
    325,826.80x = 56,338,196,986.32
  5. Step 5: Solve for x
    x = 56,338,196,986.32/325,826.80
  6. Step 6: Final answer
    x = 172,908.42

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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.