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Finding the Fourth Proportional to 351,296.61, 484,798.74 and 213,428.61

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Solution

The fourth proportional to 351,296.61, 484,798.74 and 213,428.61 is: 294,537.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,296.61 : 484,798.74 = 213,428.61 : x
  2. Step 2: Convert to fraction form
    351,296.61/484,798.74 = 213,428.61/x
  3. Step 3: Cross multiply
    351,296.61x = 484,798.74 × 213,428.61
  4. Step 4: Simplify right side
    351,296.61x = 103,469,921,207.95
  5. Step 5: Solve for x
    x = 103,469,921,207.95/351,296.61
  6. Step 6: Final answer
    x = 294,537.20

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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.