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Finding the Fourth Proportional to 219,561.92, 302,991.51 and 124,066.57

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Solution

The fourth proportional to 219,561.92, 302,991.51 and 124,066.57 is: 171,209.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,561.92 : 302,991.51 = 124,066.57 : x
  2. Step 2: Convert to fraction form
    219,561.92/302,991.51 = 124,066.57/x
  3. Step 3: Cross multiply
    219,561.92x = 302,991.51 × 124,066.57
  4. Step 4: Simplify right side
    219,561.92x = 37,591,117,660.70
  5. Step 5: Solve for x
    x = 37,591,117,660.70/219,561.92
  6. Step 6: Final answer
    x = 171,209.64

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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.