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Finding the Fourth Proportional to 290,659.40, 401,106.36 and 163,356.56

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Solution

The fourth proportional to 290,659.40, 401,106.36 and 163,356.56 is: 225,430.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,659.40 : 401,106.36 = 163,356.56 : x
  2. Step 2: Convert to fraction form
    290,659.40/401,106.36 = 163,356.56/x
  3. Step 3: Cross multiply
    290,659.40x = 401,106.36 × 163,356.56
  4. Step 4: Simplify right side
    290,659.40x = 65,523,355,163.72
  5. Step 5: Solve for x
    x = 65,523,355,163.72/290,659.40
  6. Step 6: Final answer
    x = 225,430.02

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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.