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Finding the Fourth Proportional to 325,647.79, 449,003.07 and 280,247.72

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Solution

The fourth proportional to 325,647.79, 449,003.07 and 280,247.72 is: 386,405.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,647.79 : 449,003.07 = 280,247.72 : x
  2. Step 2: Convert to fraction form
    325,647.79/449,003.07 = 280,247.72/x
  3. Step 3: Cross multiply
    325,647.79x = 449,003.07 × 280,247.72
  4. Step 4: Simplify right side
    325,647.79x = 125,832,084,395.49
  5. Step 5: Solve for x
    x = 125,832,084,395.49/325,647.79
  6. Step 6: Final answer
    x = 386,405.46

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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.