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Finding the Fourth Proportional to 290,987.64, 436,588.08 and 122,550.36

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Solution

The fourth proportional to 290,987.64, 436,588.08 and 122,550.36 is: 183,870.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,987.64 : 436,588.08 = 122,550.36 : x
  2. Step 2: Convert to fraction form
    290,987.64/436,588.08 = 122,550.36/x
  3. Step 3: Cross multiply
    290,987.64x = 436,588.08 × 122,550.36
  4. Step 4: Simplify right side
    290,987.64x = 53,504,026,375.71
  5. Step 5: Solve for x
    x = 53,504,026,375.71/290,987.64
  6. Step 6: Final answer
    x = 183,870.44

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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.