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Finding the Fourth Proportional to 290,563.36, 400,955.88 and 163,260.16

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Solution

The fourth proportional to 290,563.36, 400,955.88 and 163,260.16 is: 225,286.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,563.36 : 400,955.88 = 163,260.16 : x
  2. Step 2: Convert to fraction form
    290,563.36/400,955.88 = 163,260.16/x
  3. Step 3: Cross multiply
    290,563.36x = 400,955.88 × 163,260.16
  4. Step 4: Simplify right side
    290,563.36x = 65,460,121,121.74
  5. Step 5: Solve for x
    x = 65,460,121,121.74/290,563.36
  6. Step 6: Final answer
    x = 225,286.91

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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.