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Finding the Fourth Proportional to 636,245.55, 954,343.35 and 215,521.38

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Solution

The fourth proportional to 636,245.55, 954,343.35 and 215,521.38 is: 323,273.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,245.55 : 954,343.35 = 215,521.38 : x
  2. Step 2: Convert to fraction form
    636,245.55/954,343.35 = 215,521.38/x
  3. Step 3: Cross multiply
    636,245.55x = 954,343.35 × 215,521.38
  4. Step 4: Simplify right side
    636,245.55x = 205,681,395,785.82
  5. Step 5: Solve for x
    x = 205,681,395,785.82/636,245.55
  6. Step 6: Final answer
    x = 323,273.61

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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.