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Finding the Fourth Proportional to 290,773.38, 436,159.92 and 91,109.46

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Solution

The fourth proportional to 290,773.38, 436,159.92 and 91,109.46 is: 136,664.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,773.38 : 436,159.92 = 91,109.46 : x
  2. Step 2: Convert to fraction form
    290,773.38/436,159.92 = 91,109.46/x
  3. Step 3: Cross multiply
    290,773.38x = 436,159.92 × 91,109.46
  4. Step 4: Simplify right side
    290,773.38x = 39,738,294,784.84
  5. Step 5: Solve for x
    x = 39,738,294,784.84/290,773.38
  6. Step 6: Final answer
    x = 136,664.14

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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.