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Finding the Fourth Proportional to 323,900.75, 447,126.36 and 209,235.30

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Solution

The fourth proportional to 323,900.75, 447,126.36 and 209,235.30 is: 288,837.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,900.75 : 447,126.36 = 209,235.30 : x
  2. Step 2: Convert to fraction form
    323,900.75/447,126.36 = 209,235.30/x
  3. Step 3: Cross multiply
    323,900.75x = 447,126.36 × 209,235.30
  4. Step 4: Simplify right side
    323,900.75x = 93,554,618,072.51
  5. Step 5: Solve for x
    x = 93,554,618,072.51/323,900.75
  6. Step 6: Final answer
    x = 288,837.30

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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.