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Finding the Fourth Proportional to 331,393.60, 448,081.20 and 331,393.60

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Solution

The fourth proportional to 331,393.60, 448,081.20 and 331,393.60 is: 448,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,393.60 : 448,081.20 = 331,393.60 : x
  2. Step 2: Convert to fraction form
    331,393.60/448,081.20 = 331,393.60/x
  3. Step 3: Cross multiply
    331,393.60x = 448,081.20 × 331,393.60
  4. Step 4: Simplify right side
    331,393.60x = 148,491,241,960.32
  5. Step 5: Solve for x
    x = 148,491,241,960.32/331,393.60
  6. Step 6: Final answer
    x = 448,081.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.