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Finding the Fourth Proportional to 325,268.40, 487,211.40 and 269,972.40

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Solution

The fourth proportional to 325,268.40, 487,211.40 and 269,972.40 is: 404,384.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,268.40 : 487,211.40 = 269,972.40 : x
  2. Step 2: Convert to fraction form
    325,268.40/487,211.40 = 269,972.40/x
  3. Step 3: Cross multiply
    325,268.40x = 487,211.40 × 269,972.40
  4. Step 4: Simplify right side
    325,268.40x = 131,533,630,965.36
  5. Step 5: Solve for x
    x = 131,533,630,965.36/325,268.40
  6. Step 6: Final answer
    x = 404,384.90

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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.