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Finding the Fourth Proportional to 290,577.98, 436,523.08 and 172,326.88

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Solution

The fourth proportional to 290,577.98, 436,523.08 and 172,326.88 is: 258,879.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,577.98 : 436,523.08 = 172,326.88 : x
  2. Step 2: Convert to fraction form
    290,577.98/436,523.08 = 172,326.88/x
  3. Step 3: Cross multiply
    290,577.98x = 436,523.08 × 172,326.88
  4. Step 4: Simplify right side
    290,577.98x = 75,224,660,424.39
  5. Step 5: Solve for x
    x = 75,224,660,424.39/290,577.98
  6. Step 6: Final answer
    x = 258,879.43

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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.