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Finding the Fourth Proportional to 290,571.98, 400,999.65 and 163,245.02

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Solution

The fourth proportional to 290,571.98, 400,999.65 and 163,245.02 is: 225,283.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,571.98 : 400,999.65 = 163,245.02 : x
  2. Step 2: Convert to fraction form
    290,571.98/400,999.65 = 163,245.02/x
  3. Step 3: Cross multiply
    290,571.98x = 400,999.65 × 163,245.02
  4. Step 4: Simplify right side
    290,571.98x = 65,461,195,884.24
  5. Step 5: Solve for x
    x = 65,461,195,884.24/290,571.98
  6. Step 6: Final answer
    x = 225,283.92

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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.