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Finding the Fourth Proportional to 642,252.63, 886,270.54 and 351,806.14

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Solution

The fourth proportional to 642,252.63, 886,270.54 and 351,806.14 is: 485,471.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,252.63 : 886,270.54 = 351,806.14 : x
  2. Step 2: Convert to fraction form
    642,252.63/886,270.54 = 351,806.14/x
  3. Step 3: Cross multiply
    642,252.63x = 886,270.54 × 351,806.14
  4. Step 4: Simplify right side
    642,252.63x = 311,795,417,673.12
  5. Step 5: Solve for x
    x = 311,795,417,673.12/642,252.63
  6. Step 6: Final answer
    x = 485,471.61

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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.