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Finding the Fourth Proportional to 290,097.36, 435,136.92 and 79,733.48

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Solution

The fourth proportional to 290,097.36, 435,136.92 and 79,733.48 is: 119,597.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,097.36 : 435,136.92 = 79,733.48 : x
  2. Step 2: Convert to fraction form
    290,097.36/435,136.92 = 79,733.48/x
  3. Step 3: Cross multiply
    290,097.36x = 435,136.92 × 79,733.48
  4. Step 4: Simplify right side
    290,097.36x = 34,694,980,908.08
  5. Step 5: Solve for x
    x = 34,694,980,908.08/290,097.36
  6. Step 6: Final answer
    x = 119,597.71

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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.