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Finding the Fourth Proportional to 228,857.40, 343,286.10 and 217,193.40

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Solution

The fourth proportional to 228,857.40, 343,286.10 and 217,193.40 is: 325,790.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,857.40 : 343,286.10 = 217,193.40 : x
  2. Step 2: Convert to fraction form
    228,857.40/343,286.10 = 217,193.40/x
  3. Step 3: Cross multiply
    228,857.40x = 343,286.10 × 217,193.40
  4. Step 4: Simplify right side
    228,857.40x = 74,559,475,231.74
  5. Step 5: Solve for x
    x = 74,559,475,231.74/228,857.40
  6. Step 6: Final answer
    x = 325,790.10

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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.