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Finding the Fourth Proportional to 290,919.60, 436,185 and 234,828.72

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Solution

The fourth proportional to 290,919.60, 436,185 and 234,828.72 is: 352,086.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,919.60 : 436,185 = 234,828.72 : x
  2. Step 2: Convert to fraction form
    290,919.60/436,185 = 234,828.72/x
  3. Step 3: Cross multiply
    290,919.60x = 436,185 × 234,828.72
  4. Step 4: Simplify right side
    290,919.60x = 102,428,765,233.20
  5. Step 5: Solve for x
    x = 102,428,765,233.20/290,919.60
  6. Step 6: Final answer
    x = 352,086.16

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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.