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Finding the Fourth Proportional to 290,679.48, 401,116.81 and 159,866.34

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Solution

The fourth proportional to 290,679.48, 401,116.81 and 159,866.34 is: 220,604.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,679.48 : 401,116.81 = 159,866.34 : x
  2. Step 2: Convert to fraction form
    290,679.48/401,116.81 = 159,866.34/x
  3. Step 3: Cross multiply
    290,679.48x = 401,116.81 × 159,866.34
  4. Step 4: Simplify right side
    290,679.48x = 64,125,076,327.18
  5. Step 5: Solve for x
    x = 64,125,076,327.18/290,679.48
  6. Step 6: Final answer
    x = 220,604.07

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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.