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Finding the Fourth Proportional to 290,732.48, 436,136.16 and 91,062.08

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Solution

The fourth proportional to 290,732.48, 436,136.16 and 91,062.08 is: 136,604.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,732.48 : 436,136.16 = 91,062.08 : x
  2. Step 2: Convert to fraction form
    290,732.48/436,136.16 = 91,062.08/x
  3. Step 3: Cross multiply
    290,732.48x = 436,136.16 × 91,062.08
  4. Step 4: Simplify right side
    290,732.48x = 39,715,465,892.81
  5. Step 5: Solve for x
    x = 39,715,465,892.81/290,732.48
  6. Step 6: Final answer
    x = 136,604.85

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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.