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Finding the Fourth Proportional to 323,445.36, 485,261.64 and 133,870.68

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Solution

The fourth proportional to 323,445.36, 485,261.64 and 133,870.68 is: 200,844.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,445.36 : 485,261.64 = 133,870.68 : x
  2. Step 2: Convert to fraction form
    323,445.36/485,261.64 = 133,870.68/x
  3. Step 3: Cross multiply
    323,445.36x = 485,261.64 × 133,870.68
  4. Step 4: Simplify right side
    323,445.36x = 64,962,305,724.72
  5. Step 5: Solve for x
    x = 64,962,305,724.72/323,445.36
  6. Step 6: Final answer
    x = 200,844.76

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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.