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Finding the Fourth Proportional to 358,418.52, 494,538.21 and 207,428.04

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Solution

The fourth proportional to 358,418.52, 494,538.21 and 207,428.04 is: 286,204.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,418.52 : 494,538.21 = 207,428.04 : x
  2. Step 2: Convert to fraction form
    358,418.52/494,538.21 = 207,428.04/x
  3. Step 3: Cross multiply
    358,418.52x = 494,538.21 × 207,428.04
  4. Step 4: Simplify right side
    358,418.52x = 102,581,091,605.41
  5. Step 5: Solve for x
    x = 102,581,091,605.41/358,418.52
  6. Step 6: Final answer
    x = 286,204.77

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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.