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Finding the Fourth Proportional to 290,492.31, 400,879.62 and 163,168.01

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Solution

The fourth proportional to 290,492.31, 400,879.62 and 163,168.01 is: 225,171.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,492.31 : 400,879.62 = 163,168.01 : x
  2. Step 2: Convert to fraction form
    290,492.31/400,879.62 = 163,168.01/x
  3. Step 3: Cross multiply
    290,492.31x = 400,879.62 × 163,168.01
  4. Step 4: Simplify right side
    290,492.31x = 65,410,727,840.56
  5. Step 5: Solve for x
    x = 65,410,727,840.56/290,492.31
  6. Step 6: Final answer
    x = 225,171.98

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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.