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Finding the Fourth Proportional to 469,071.75, 647,388.50 and 297,005.72

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Solution

The fourth proportional to 469,071.75, 647,388.50 and 297,005.72 is: 409,911.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,071.75 : 647,388.50 = 297,005.72 : x
  2. Step 2: Convert to fraction form
    469,071.75/647,388.50 = 297,005.72/x
  3. Step 3: Cross multiply
    469,071.75x = 647,388.50 × 297,005.72
  4. Step 4: Simplify right side
    469,071.75x = 192,278,082,840.25
  5. Step 5: Solve for x
    x = 192,278,082,840.25/469,071.75
  6. Step 6: Final answer
    x = 409,911.88

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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.