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Finding the Fourth Proportional to 368,427.88, 508,427.94 and 209,451.88

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Solution

The fourth proportional to 368,427.88, 508,427.94 and 209,451.88 is: 289,042.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,427.88 : 508,427.94 = 209,451.88 : x
  2. Step 2: Convert to fraction form
    368,427.88/508,427.94 = 209,451.88/x
  3. Step 3: Cross multiply
    368,427.88x = 508,427.94 × 209,451.88
  4. Step 4: Simplify right side
    368,427.88x = 106,491,187,877.53
  5. Step 5: Solve for x
    x = 106,491,187,877.53/368,427.88
  6. Step 6: Final answer
    x = 289,042.15

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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.