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Finding the Fourth Proportional to 290,953.36, 401,531.52 and 163,636.48

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Solution

The fourth proportional to 290,953.36, 401,531.52 and 163,636.48 is: 225,827.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,953.36 : 401,531.52 = 163,636.48 : x
  2. Step 2: Convert to fraction form
    290,953.36/401,531.52 = 163,636.48/x
  3. Step 3: Cross multiply
    290,953.36x = 401,531.52 × 163,636.48
  4. Step 4: Simplify right side
    290,953.36x = 65,705,204,541.85
  5. Step 5: Solve for x
    x = 65,705,204,541.85/290,953.36
  6. Step 6: Final answer
    x = 225,827.28

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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.