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Finding the Fourth Proportional to 317,672.82, 438,427.99 and 181,687.89

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Solution

The fourth proportional to 317,672.82, 438,427.99 and 181,687.89 is: 250,751.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,672.82 : 438,427.99 = 181,687.89 : x
  2. Step 2: Convert to fraction form
    317,672.82/438,427.99 = 181,687.89/x
  3. Step 3: Cross multiply
    317,672.82x = 438,427.99 × 181,687.89
  4. Step 4: Simplify right side
    317,672.82x = 79,657,058,291.26
  5. Step 5: Solve for x
    x = 79,657,058,291.26/317,672.82
  6. Step 6: Final answer
    x = 250,751.88

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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.