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Finding the Fourth Proportional to 408,822.13, 613,254.39 and 124,490.72

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Solution

The fourth proportional to 408,822.13, 613,254.39 and 124,490.72 is: 186,742.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,822.13 : 613,254.39 = 124,490.72 : x
  2. Step 2: Convert to fraction form
    408,822.13/613,254.39 = 124,490.72/x
  3. Step 3: Cross multiply
    408,822.13x = 613,254.39 × 124,490.72
  4. Step 4: Simplify right side
    408,822.13x = 76,344,476,865.54
  5. Step 5: Solve for x
    x = 76,344,476,865.54/408,822.13
  6. Step 6: Final answer
    x = 186,742.53

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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.