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Finding the Fourth Proportional to 375,422.58, 518,080.02 and 203,336.55

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Solution

The fourth proportional to 375,422.58, 518,080.02 and 203,336.55 is: 280,602.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,422.58 : 518,080.02 = 203,336.55 : x
  2. Step 2: Convert to fraction form
    375,422.58/518,080.02 = 203,336.55/x
  3. Step 3: Cross multiply
    375,422.58x = 518,080.02 × 203,336.55
  4. Step 4: Simplify right side
    375,422.58x = 105,344,603,890.73
  5. Step 5: Solve for x
    x = 105,344,603,890.73/375,422.58
  6. Step 6: Final answer
    x = 280,602.74

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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.