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Finding the Fourth Proportional to 313,143.64, 429,481.21 and 300,283.96

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Solution

The fourth proportional to 313,143.64, 429,481.21 and 300,283.96 is: 411,843.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,143.64 : 429,481.21 = 300,283.96 : x
  2. Step 2: Convert to fraction form
    313,143.64/429,481.21 = 300,283.96/x
  3. Step 3: Cross multiply
    313,143.64x = 429,481.21 × 300,283.96
  4. Step 4: Simplify right side
    313,143.64x = 128,966,318,484.39
  5. Step 5: Solve for x
    x = 128,966,318,484.39/313,143.64
  6. Step 6: Final answer
    x = 411,843.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.