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Finding the Fourth Proportional to 254,707.39, 381,479.28 and 121,681.90

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Solution

The fourth proportional to 254,707.39, 381,479.28 and 121,681.90 is: 182,244.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,707.39 : 381,479.28 = 121,681.90 : x
  2. Step 2: Convert to fraction form
    254,707.39/381,479.28 = 121,681.90/x
  3. Step 3: Cross multiply
    254,707.39x = 381,479.28 × 121,681.90
  4. Step 4: Simplify right side
    254,707.39x = 46,419,123,601.03
  5. Step 5: Solve for x
    x = 46,419,123,601.03/254,707.39
  6. Step 6: Final answer
    x = 182,244.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.