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Finding the Fourth Proportional to 290,883.98, 436,326.01 and 91,221.82

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Solution

The fourth proportional to 290,883.98, 436,326.01 and 91,221.82 is: 136,832.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,883.98 : 436,326.01 = 91,221.82 : x
  2. Step 2: Convert to fraction form
    290,883.98/436,326.01 = 91,221.82/x
  3. Step 3: Cross multiply
    290,883.98x = 436,326.01 × 91,221.82
  4. Step 4: Simplify right side
    290,883.98x = 39,802,451,426.67
  5. Step 5: Solve for x
    x = 39,802,451,426.67/290,883.98
  6. Step 6: Final answer
    x = 136,832.74

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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.