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Finding the Fourth Proportional to 351,135.77, 526,708.13 and 123,422.20

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Solution

The fourth proportional to 351,135.77, 526,708.13 and 123,422.20 is: 185,134.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,135.77 : 526,708.13 = 123,422.20 : x
  2. Step 2: Convert to fraction form
    351,135.77/526,708.13 = 123,422.20/x
  3. Step 3: Cross multiply
    351,135.77x = 526,708.13 × 123,422.20
  4. Step 4: Simplify right side
    351,135.77x = 65,007,476,162.49
  5. Step 5: Solve for x
    x = 65,007,476,162.49/351,135.77
  6. Step 6: Final answer
    x = 185,134.87

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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.