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Finding the Fourth Proportional to 290,573.82, 400,829.97 and 270,023.85

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Solution

The fourth proportional to 290,573.82, 400,829.97 and 270,023.85 is: 372,482.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,573.82 : 400,829.97 = 270,023.85 : x
  2. Step 2: Convert to fraction form
    290,573.82/400,829.97 = 270,023.85/x
  3. Step 3: Cross multiply
    290,573.82x = 400,829.97 × 270,023.85
  4. Step 4: Simplify right side
    290,573.82x = 108,233,651,694.78
  5. Step 5: Solve for x
    x = 108,233,651,694.78/290,573.82
  6. Step 6: Final answer
    x = 372,482.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.