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Finding the Fourth Proportional to 450,636.49, 621,950.79 and 257,107.33

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Solution

The fourth proportional to 450,636.49, 621,950.79 and 257,107.33 is: 354,849.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,636.49 : 621,950.79 = 257,107.33 : x
  2. Step 2: Convert to fraction form
    450,636.49/621,950.79 = 257,107.33/x
  3. Step 3: Cross multiply
    450,636.49x = 621,950.79 × 257,107.33
  4. Step 4: Simplify right side
    450,636.49x = 159,908,107,008.29
  5. Step 5: Solve for x
    x = 159,908,107,008.29/450,636.49
  6. Step 6: Final answer
    x = 354,849.44

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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.