Home / 290,669.40-401,120.16-163,366.56

Finding the Fourth Proportional to 290,669.40, 401,120.16 and 163,366.56

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Solution

The fourth proportional to 290,669.40, 401,120.16 and 163,366.56 is: 225,443.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,669.40 : 401,120.16 = 163,366.56 : x
  2. Step 2: Convert to fraction form
    290,669.40/401,120.16 = 163,366.56/x
  3. Step 3: Cross multiply
    290,669.40x = 401,120.16 × 163,366.56
  4. Step 4: Simplify right side
    290,669.40x = 65,529,620,685.85
  5. Step 5: Solve for x
    x = 65,529,620,685.85/290,669.40
  6. Step 6: Final answer
    x = 225,443.82

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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.