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Finding the Fourth Proportional to 290,898.54, 436,350.24 and 91,249.74

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Solution

The fourth proportional to 290,898.54, 436,350.24 and 91,249.74 is: 136,875.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,898.54 : 436,350.24 = 91,249.74 : x
  2. Step 2: Convert to fraction form
    290,898.54/436,350.24 = 91,249.74/x
  3. Step 3: Cross multiply
    290,898.54x = 436,350.24 × 91,249.74
  4. Step 4: Simplify right side
    290,898.54x = 39,816,845,948.94
  5. Step 5: Solve for x
    x = 39,816,845,948.94/290,898.54
  6. Step 6: Final answer
    x = 136,875.37

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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.