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Finding the Fourth Proportional to 290,330.80, 435,496.20 and 248,858.80

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Solution

The fourth proportional to 290,330.80, 435,496.20 and 248,858.80 is: 373,288.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,330.80 : 435,496.20 = 248,858.80 : x
  2. Step 2: Convert to fraction form
    290,330.80/435,496.20 = 248,858.80/x
  3. Step 3: Cross multiply
    290,330.80x = 435,496.20 × 248,858.80
  4. Step 4: Simplify right side
    290,330.80x = 108,377,061,736.56
  5. Step 5: Solve for x
    x = 108,377,061,736.56/290,330.80
  6. Step 6: Final answer
    x = 373,288.20

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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.